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126-473: The armament industry was an important part of the interwar Czechoslovak economy and made up a large part of the country's exports (see, for example, Bren light machine gun , which was a modified version of the Czechoslovak ZB vz. 26 ). However following the 1948 communist coup d'état , all heavy industry was nationalized and was (at least officially) cut off from its Western export market behind

252-782: A League of Nations mandate of the former German Cameroon and a free hand in the Ethiopian Empire from France in return for Italian support against Germany in the Stresa Front . This was refused by French Prime Minister Édouard Herriot , who was not yet sufficiently worried about the prospect of a German resurgence. The failed resolution of the Abyssinia Crisis led to the Second Italo-Ethiopian War , in which Italy annexed Ethiopia to its empire. Italy's stance towards Spain shifted between

378-618: A Marcel wave . The young women who pioneered these trends were called " flappers ". Not all was new: "normalcy" returned to politics in the wake of hyper-emotional wartime passions in the United States, France, and Germany. The leftist revolutions in Finland, Poland, Germany, Austria, Hungary, and Spain were defeated by conservatives, but succeeded in Russia, which became the base for Soviet communism and Marxism–Leninism . In Italy,

504-569: A client state following British guidance. Egypt joined the League of Nations. Egypt's King Fuad and his son King Farouk and their conservative allies stayed in power with lavish lifestyles thanks to an informal alliance with Britain who would protect them from both secular and Muslim radicalism. Mandatory Iraq , a British mandate since 1920, gained official independence as the Kingdom of Iraq in 1932 when King Faisal agreed to British terms of

630-819: A non-aggression pact with the Soviet Union in August 1939, Germany invaded Poland after Poland's refusal to cede the Free City of Danzig in September 1939. Britain and France declared war and World War II began – somewhat sooner than the Nazis expected or were ready for. After establishing the " Rome-Berlin Axis " with Benito Mussolini , and signing the Anti-Comintern Pact with Japan – which

756-474: A cartridge that yields a momentum approximately equal to that for which the mechanism was optimized. For example, the M1911 design with factory springs is optimized for a 230-grain (15 g) bullet at factory velocity. Changes in caliber or drastic changes in bullet weight and/or velocity require modifications to spring weight or slide mass to compensate. Similarly the use of blank ammunition will typically cause

882-597: A complete freedom in designing the whole gun from scratch. The design he developed was in many ways new and innovative (see Design details ). Although the model was developed for export purposes (the standard pistol cartridge of the Czechoslovak armed forces was the Soviet 7.62×25mm Tokarev , which was later replaced with the Warsaw Pact standard 9mm Makarov pistol cartridge), Koucký's domestic patents regarding

1008-518: A custom-made version CZ 75 Tactical Sports Open being also available. In 2009, the sale of CZ 75 TS Czechmate began. The model is a development of the CZ 75 TS Open, available in 9×19mm Parabellum and 9×21mm with magazine capacity of 20 or 26 rounds. As standard, the gun is sold with US made C-More Systems' red-dot sight. CZUB claims that its factory shooter Martin Kameníček had shot 150,000 rounds through

1134-413: A disgust with cultural liberalism . Fascists believed in power, violence, male superiority, and a "natural" hierarchy, often led by dictators such as Benito Mussolini or Adolf Hitler . Fascism in power meant that liberalism and human rights were discarded, and individual pursuits and values were subordinated to what the party decided was best. The Japanese modelled their industrial economy closely on

1260-402: A double-action first shot can be achieved in a similar manner to other double-action pistols without actuating any controls. Subsequent shots will be single-action unless the hammer is again manually lowered. Some recent models have a decocking lever that doubles as a manual safety. Unlike most other semi-auto pistols, the CZ 75's slide rides inside its frame rails rather than outside, similar to

1386-430: A frame-mounted manual safety . This allows the CZ 75 to be carried with the hammer cocked with safety applied and a round chambered, ready for use simply by switching the safety off, a configuration known as condition 1 . The hammer must be dropped manually by pulling the trigger while lowering the hammer with the firer's thumb under control to uncock the hammer for a double-action first shot. Once lowered in this manner,

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1512-547: A limit that would be determined by the mandatory power. This led to increasing conflict with the Arab population, who openly revolted in 1936 . As the threat of war with Germany increased during the 1930s, Britain judged the support of Arabs as more important than the establishment of a Jewish homeland, and shifted to a pro-Arab stance, limiting Jewish immigration and in turn triggering a Jewish insurgency . The Dominions (Canada, Newfoundland, Australia, New Zealand, South Africa and

1638-491: A major role in several countries in Latin America. Fascist parties sprang up, attuned to local right-wing traditions, but also possessing common features that typically included extreme militaristic nationalism, a desire for economic self-containment, threats and aggression toward neighbouring countries, oppression of minorities, a ridicule of democracy while using its techniques to mobilise an angry middle-class base, and

1764-494: A mass such as the ground, a ship's gun mount, or a human holding the firearm. The moving and the motionless masses are coupled by a spring that absorbs the recoil energy as it is compressed by the movement and then expands providing energy for the rest of the operating cycle. Since there is a minimum momentum required to operate a recoil-operated firearm's action, the cartridge must generate sufficient recoil to provide that momentum. Therefore, recoil-operated firearms work best with

1890-582: A military alliance and an assured flow of oil. In Palestine , Britain was presented with the problem of mediating between the Palestinian Arabs and increasing numbers of Jewish settlers . The Balfour Declaration , which had been incorporated into the terms of the mandate, stated that a national home for the Jewish people would be established in Palestine, and Jewish immigration allowed up to

2016-654: A payment to Turkey , the successor state to the Ottoman Empire, though he failed in an attempt to extract a mandate of a portion of Iraq from Britain. The month following the ratification of the Treaty of Lausanne, Mussolini ordered the invasion of the Greek island of Corfu after the Corfu incident . The Italian press supported the move, noting that Corfu had been a Venetian possession for four hundred years. The matter

2142-405: A program intended to develop a gun that used the recoil of a fired shot to reload the firearm, though a working model wouldn't be produced until 1888. Later in the 1870s, a Swedish captain called D. H. Friberg patented a design which introduced both flapper-locking and the fully automatic recoil operated machine gun. Furthermore, in 1875 a means of cocking a rifle through recoil was patented through

2268-417: A sharp reduction in new business starts. Cities all around the world were hit hard, especially those dependent on heavy industry . Construction was virtually halted in many countries. Farming communities and rural areas suffered as crop prices fell by about 60%. Facing plummeting demand with few alternative sources of jobs, areas dependent on primary sector industries such as mining and logging suffered

2394-462: A smaller neighbour to match Germany's annexation of Austria and Czechoslovakia . Italian King Victor Emmanuel III took the Albanian crown , and a fascist government under Shefqet Vërlaci was established. Recoil operation Recoil operation is an operating mechanism used to implement locked-breech autoloading firearms . Recoil operated firearms use the energy of recoil to cycle

2520-533: A stable state. Albanian society was deeply divided by religion and language, with a border dispute with Greece and an undeveloped, rural economy. In 1939, Italy invaded and annexed Albania as a separate kingdom in personal union with the Italian crown. Italy had long built strong links with the Albanian leadership and considered it firmly within its sphere of influence. Mussolini wanted a spectacular success over

2646-421: Is also found in some suppressors used on short recoil firearms, under the name gas assist or Nielsen device , where it is used to compensate for the extra mass the suppressor adds to the recoiling parts both by providing a boost and decoupling some of the suppressor's mass from the firearm's recoiling parts. Muzzle boosters are also used on some recoil-operated firearms' blank-firing attachments to normalize

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2772-485: Is another automatic gun that dates from the same year, but its type and method of operation are unknown. Recoil-operation, if it was invented in 1663, would then lie dormant until the 19th century, when a number of inventors started to patent designs featuring recoil operation; this was due to the fact that the integrated disposable cartridge (both bullet and propellant in one easily interchangeable unit) made these designs viable. The earliest mention of recoil operation in

2898-528: Is released and forced closed by its recoil spring, chambering a fresh round. The long recoil system was invented in the late 19th century and dominated the automatic shotgun market for more than half that century before it was supplanted by new gas-operated designs. While Browning halted production of the Auto-5 design in 1999, Franchi still makes a long-recoil–operated shotgun line, the AL-48 , which shares both

3024-438: Is required by the conservation of momentum such that the ejecta momentum and recoiling momentum are equal. These momenta are calculated by: The barrel is a moving part of the action in recoil-operated firearms. In non-recoil-operated firearms, it is generally the entire firearm that recoils. However, in recoil-operated firearms, only a portion of the firearm recoils while inertia holds another portion motionless relative to

3150-823: The Bolsheviks managed to regain control of Belarus and Ukraine, Central Asia, and the Caucasus, forming the Soviet Union . In the Near East , Egypt and Iraq gained independence. During the Great Depression , countries in Latin America nationalised many foreign companies (most of which belonged to the United States ) in a bid to strengthen their own economies. The territorial ambitions of

3276-470: The CZUB . They participated to some extent on designing all the company's post-war weapons. Kouckýs signed their designs together, using only the surname, making it impossible to determine which one of them developed particular ideas. By 1969, František Koucký was freshly retired, however the company offered him a job on designing a new 9×19mm Parabellum pistol. Unlike during his previous work, this time he had

3402-565: The Congress Party led by Mohandas Gandhi . In Britain, public opinion was divided over the morality of the massacre between those who saw it as having saved India from anarchy and those who viewed it with revulsion. Egypt had been under de facto British control since the 1880s, despite its nominal ownership by the Ottoman Empire . In 1922, the Kingdom of Egypt was granted formal independence , though it continued to be

3528-921: The Entente , the Americans came up with the Dawes Plan and Wall Street invested heavily in Germany, which repaid its reparations to nations that, in turn, used the dollars to pay off their war debts to Washington. By the middle of the decade, prosperity was widespread, with the second half of the decade known as the Roaring Twenties . The important stages of interwar diplomacy and international relations included resolutions of wartime issues, such as reparations owed by Germany and boundaries; American involvement in European finances and disarmament projects;

3654-538: The German Reich . After Austria, Hitler turned to Czechoslovakia , where the 3.5 million-strong Sudeten German minority was demanding equal rights and self-government. At the Munich Conference of September 1938, Hitler, the Italian leader Benito Mussolini, British Prime Minister Neville Chamberlain , and French Prime Minister Édouard Daladier agreed upon the cession of Sudeten territory to

3780-611: The Imperial Japanese Army and supported by other right-wing societies. The IJA's nationalism ended civilian rule in Japan until after 1945. The Army, however, was itself divided into cliques and factions with different strategic viewpoints. One faction viewed the Soviet Union as the main enemy; the other sought to build a mighty empire based in Manchuria and northern China. The Navy, while smaller and less influential,

3906-646: The Iron Curtain . While most other Warsaw Pact countries became dependent on armaments imports from the Soviet Union , most of the Czechoslovak weaponry remained domestic (for example, the Czechoslovak army used the Vz. 58 assault rifle, while other communist bloc countries used variants of the AK-47 ). Following the Second World War, brothers Josef and František Koucký became the most important engineers of

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4032-532: The May 15 Incident and the military took more power, leading to rapid democratic backsliding . In September 1931, the Japanese Kwantung Army —acting on its own without government approval— seized control of Manchuria , an area in northeastern China that was controlled by the powerful warlord Zhang Xueliang . It created the puppet government of Manchukuo . Britain and France effectively controlled

4158-556: The National Fascist Party came to power under Benito Mussolini after threatening a March on Rome in 1922. Most independent countries enacted women's suffrage in the interwar era, including Canada in 1917 (though Quebec held out longer), Britain in 1918, and the United States in 1920. There were a few major countries that held out until after the Second World War (such as France, Switzerland, and Portugal). Leslie Hume argues: The women's contribution to

4284-466: The SIG P210 . The original models produced from 1975 to 1980 featured a distinctively shorter, 115mm long slide rails. The frames on these first model or "short rail" pistols were forged. Starting in 1980, CZUB modified the design by lengthening the slide rails to 140mm, transitioned to lower cost cast frames, and introduced a "half-cock" safety notch on the hammer to prevent it from inadvertently striking

4410-621: The Twenty-One Demands of 1915. Its occupation of Siberia proved unproductive. Japan's wartime diplomacy and limited military action had produced few results, and at the Paris Versailles peace conference at the end of the war, Japan was frustrated in its ambitions. At the Paris Peace Conference in 1919, its Racial Equality Proposal led to increasing diplomatic isolation. The 1902 alliance with Britain

4536-492: The conservative and Catholic elements and the army revolted against the newly elected government of the Second Spanish Republic , and full-scale civil war erupted. Fascist Italy and Nazi Germany gave munitions and strong military units to the rebel Nationalist faction , led by General Francisco Franco . The Republican (or "Loyalist") government , was on the defensive, but it received significant help from

4662-421: The interwar period (or interbellum ) lasted from 11   November 1918 to 1   September 1939 (20   years, 9   months, 21   days) – from the end of World War I (WWI) to the beginning of World War II (WWII). It was relatively short, yet featured many social, political, military, and economic changes throughout the world. Petroleum-based energy production and associated mechanisation led to

4788-420: The naval sphere, the primary question was whether battleships would maintain their dominance of the seas or be rendered virtually obsolete by naval aviation . The military deliberations and controversies characteristic of the interwar period would ultimately find resolution via the events of WWII, which served as a foundation for many of the tenets, doctrines , and strategies of modern warfare . Overall,

4914-400: The 'traditional' branches of the regular infantry , horse cavalry , and artillery . In the air, the question of allocating air forces to strategic bombing versus dedicating such forces to frontline close air support was the primary contention, with some arguing that interceptor development was outpacing bombers , and others maintaining that " the bomber will always get through ." In

5040-533: The 1850s to the 1860s; however, all of them refer to a means of dampening recoil in firearms, which wasn't a new idea at the time, rather than true recoil operation. The next to mention recoil operation in the British patent literature is by Alexander Blakely in 1862, who clearly describes using the recoil of a fired cannon to open the breech. In 1864 after the Second Schleswig War , Denmark started

5166-622: The 1920s and the 1930s. The Fascist regime in the 1920s held deep antagonism towards Spain due to Miguel Primo de Rivera 's pro-French foreign policy. In 1926, Mussolini began aiding the Catalan separatist movement , which was led by Francesc Macià , against the Spanish government. With the rise of the left-wing Republican government replacing the Spanish monarchy , Spanish monarchists and fascists repeatedly approached Italy for aid in overthrowing

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5292-771: The 1920s. Economic disaster led to a distrust in the effectiveness of democracy and its collapse in much of Europe and Latin America, including the Baltic and Balkan countries, Poland, Spain, and Portugal. Powerful expansionary anti-democratic regimes emerged in Italy, Japan, and Germany. Fascism took control of the Kingdom of Italy in 1922; as the Great Depression worsened, Nazism emerged victorious in Germany, fascism spread to many other countries in Europe, and also played

5418-510: The Army's aggression in Manchuria, and announced it was withdrawing. On the contrary, the Army completed the conquest of Manchuria, and the civilian cabinet resigned. The political parties were divided on the issue of military expansion. Prime Minister Tsuyoshi tried to negotiate with China but was assassinated in the May 15 Incident in 1932, which ushered in an era of nationalism and militarism led by

5544-555: The Axis military alliance with Nazi Germany and Fascist Italy. In 1930, the London disarmament conference angered the Imperial Japanese Armed Forces . The Imperial Japanese Navy demanded parity with the United States, Britain and France, but was rejected and the conference kept the 1921 ratios. Japan was required to scrap a capital ship . Extremists assassinated Japanese Prime Minister Inukai Tsuyoshi in

5670-490: The British patent literature is a patent by Joseph Whitworth filed in 1855 which proposed to use recoil to partially open the breech of a rifle, the breech then being manually pulled the rest of the way back by hand. Around this time, an American by the name of Regulus Pilon is sometimes stated to have patented in Britain a gun that used a limited form of recoil operation. He had three British patents related to firearms around

5796-564: The First World War and Russian Civil War . In advanced economies the prosperity reached middle class households and many in the working class with radio , automobiles , telephones , and electric lighting and appliances . There was unprecedented industrial growth, accelerated consumer demand and aspirations, and significant changes in lifestyle and culture. The media began to focus on celebrities, especially sports heroes and movie stars. Major cities built large sports stadiums for

5922-528: The First World War. It expected a reward, but failed to get self-government as the government was still kept in control of British hands and feared another rebellion like that of 1857 . The Government of India Act 1919 failed to satisfy demand for self-rule. Mounting tension, particularly in the Punjab region , culminated in the Amritsar Massacre in 1919. Indian nationalism surged and centred in

6048-811: The French-dominated Suez Canal Company accept an Italian representative on its board of directors. Italy opposed the French monopoly over the Suez Canal because, under the French-dominated Suez Canal Company, all merchant traffic to the Italian East Africa colony was forced to pay tolls on entering the canal. Albanian Prime Minister and President Ahmet Zogu , who had, in 1928, proclaimed himself King of Albania , failed to create

6174-804: The French-run Suez Canal . Three weeks later, Mussolini told Ciano that he intended for an Italian takeover of Albania. Mussolini professed that Italy would only be able to "breathe easily" if it had acquired a contiguous colonial domain in Africa from the Atlantic to the Indian Oceans, and when ten million Italians had settled in them. In 1938, Italy demanded a sphere of influence in the Suez Canal in Egypt , specifically demanding that

6300-701: The German Reich by Czechoslovakia . Hitler thereupon declared that all of German Reich's territorial claims had been fulfilled. However, hardly six months after the Munich Agreement, in March 1939, Hitler used the smouldering quarrel between Slovaks and Czechs as a pretext for taking over the rest of Czechoslovakia as the Protectorate of Bohemia and Moravia . In the same month, he secured the return of Memel from Lithuania to Germany. Chamberlain

6426-641: The Irish Free State) were self-governing and gained semi-independence in the World War, while Britain still controlled foreign policy and defence in all except Ireland. The right of the Dominions to set their own foreign policy was recognised in 1923 and formalised by the 1931 Statute of Westminster . The Irish Free State effectively broke all ties with Britain in 1937, leaving the Commonwealth and becoming an independent republic . French census statistics from 1938 show an imperial population with France at over 150 million people, outside of France itself, of 102.8 million people living on 13.5 million square kilometers. Of

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6552-405: The Jews. Hitler's diplomatic strategy in the 1930s was to make seemingly reasonable demands, threatening war if they were not met. When opponents tried to appease him, he accepted the gains that were offered, then went to the next target. That aggressive strategy worked as Germany pulled out of the League of Nations , rejected the Versailles Treaty , and began to rearm. Retaking the Territory of

6678-443: The League of Nations, which issued the Lytton Report in 1932, saying that Japan had genuine grievances, but it acted illegally in seizing the entire province. Japan quit the League, and Britain and France took no action. US Secretary of State Henry L. Stimson announced that the United States would also not recognise Japan's conquest as legitimate. Germany welcomed Japan's actions. The civilian government in Tokyo tried to minimise

6804-414: The Mediterranean": The bars of this prison are Corsica , Tunisia , Malta , and Cyprus . The guards of this prison are Gibraltar and Suez . Corsica is a pistol pointed at the heart of Italy; Tunisia at Sicily. Malta and Cyprus constitute a threat to all our positions in the eastern and western Mediterranean. Greece, Turkey, and Egypt have been ready to form a chain with Great Britain and to complete

6930-433: The Republican forces. The Soviet Union provided armaments but never enough to equip the heterogeneous government militias and the " International Brigades " of outside far-left volunteers. The civil war did not escalate into a larger conflict, but did become a worldwide ideological battleground that pitted all the Communists and many socialists and liberals against Catholics , conservatives and fascists. Worldwide there

7056-417: The Republican government, in which Italy agreed to support them to establish a pro-Italian government in Spain. In July 1936, Francisco Franco of the Nationalist faction in the Spanish Civil War requested Italian support against the ruling Republican faction, and guaranteed that, if Italy supported the Nationalists, "future relations would be more than friendly" and that Italian support "would have permitted

7182-399: The Rhineland, and Germany was not allowed to have a real army, navy, or air force. Reparations were demanded, especially by France, involving shipments of raw materials, as well as annual payments. When Germany defaulted on its reparation payments, French and Belgian troops occupied the heavily industrialised Ruhr district (January 1923). The German government encouraged the population of

7308-429: The Ruhr to passive resistance : shops would not sell goods to the foreign soldiers, coal mines would not dig for the foreign troops, trams in which members of the occupation army had taken seat would be left abandoned in the middle of the street. The German government printed vast quantities of paper money, causing hyperinflation , which also damaged the French economy . The passive resistance proved effective, insofar as

7434-421: The Saar Basin in the aftermath of a plebiscite that favoured returning to Germany, Hitler's Germany remilitarised the Rhineland , formed the Pact of Steel alliance with Mussolini's Italy, and sent massive military aid to Franco in the Spanish Civil War. Germany seized Austria , considered to be a German state, in 1938, and took over Czechoslovakia after the Munich Agreement with Britain and France. Forming

7560-399: The Soviet Union de jure recognition, and the two signatories mutually agreed to cancel all pre-war debts and renounced war claims. In October 1925 the Treaty of Locarno was signed by Germany, France, Belgium, Britain, and Italy; it recognised Germany's borders with France and Belgium. Moreover, Britain, Italy, and Belgium undertook to assist France in the case that German troops marched into

7686-414: The Soviet Union and Japan , leading to multiple clashes along the Soviet and Japanese occupied Manchurian border; fascist diplomacy, including the aggressive moves by Mussolini's Italy and Hitler's Germany; the Spanish Civil War ; Italy's invasion and occupation of Abyssinia (Ethiopia) in the Horn of Africa ; the appeasement of Germany's expansionist moves against the German-speaking nation of Austria ,

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7812-438: The Soviet Union and Mexico. Led by Great Britain and France, and including the United States, most countries remained neutral and refused to provide armaments to either side. The powerful fear was that this localised conflict would escalate into a European conflagration that no one wanted. The Spanish Civil War was marked by numerous small battles and sieges, and many atrocities, until the Nationalists won in 1939 by overwhelming

7938-566: The Soviets, Japanese, Italians, and Germans led to the expansion of their domains. Militarily, the period would see a markedly rapid advance in technology which, alongside lessons learned from WWI, would catalyze new strategic and tactical innovations. While the period would largely see a continuation of the development of the technologies pioneered in WWI, debates emerged as to the most effective use of these advancements. On land, discussions focused on how armoured , mechanized , and motorized forces should be employed, particularly in-relation to

8064-409: The Spanish and French for control of Morocco. The Spanish had faced unrest off and on from the 1890s, but in 1921, Spanish forces were massacred at the Battle of Annual . El-Krim founded an independent Rif Republic that operated until 1926, but had no international recognition. Eventually, France and Spain agreed to end the revolt. They sent in 200,000 soldiers, forcing el-Krim to surrender in 1926; he

8190-399: The United States or Japan, Britain opted not to renew the Anglo-Japanese Alliance and instead signed the 1922 Washington Naval Treaty , in which Britain accepted naval parity with the United States. The issue of the empire's security was a serious concern in Britain, as it was vital to the British pride, its finance, and its trade-oriented economy. India strongly supported the Empire in

8316-401: The action, as opposed to gas operation or blowback operation using the pressure of the propellant gas. The earliest mention of recoil used to assist the loading of firearms is sometimes claimed to be in 1663 when an Englishman called Palmer proposed to employ either it or gases tapped along a barrel to do so. However no one has been able to verify this claim in recent times, although there

8442-405: The barrel and bolt remain locked together during recoil, compressing the recoil springs. Following this rearward movement, the bolt locks to the rear and the barrel is forced forward by its spring. The bolt is held in position until the barrel returns completely forward during which time the spent cartridge has been extracted and ejected, and a new shell has been positioned from the magazine. The bolt

8568-415: The bolt continues rearward, compressing the recoil spring and performing the automated extraction and feeding process. During the last portion of its forward travel, the bolt locks into the barrel and pushes the barrel back into battery. The method of locking and unlocking the barrel differentiates the wide array of short recoil designs. Most common are the John Browning tilting barrel designs based on either

8694-469: The bolt reaches the end of its travel, the return spring provides the force to chamber the next round from the magazine, and lock the bolt closed. Some short-recoil–operated firearms, such as the German MG 42 and MG 3 , use a mechanism at the muzzle to extract some energy from the escaping powder gases to push the barrel backwards, in addition to the recoil energy. This boost provides higher rates of fire and/or more reliable operation. This type of mechanism

8820-423: The demilitarised Rhineland. Locarno paved the way for Germany's admission to the League of Nations in 1926. Hitler came to power in January 1933, and inaugurated an aggressive power designed to give Germany economic and political domination across central Europe. He did not attempt to recover the lost colonies. Until August 1939, the Nazis denounced Communists and the Soviet Union as the greatest enemy, along with

8946-445: The design were classified as "secret patents". Effectively, nobody could learn about their existence, but also nobody could register the same design in Czechoslovakia. At the same time Koucký as well as the company were prohibited from filing for patent protection abroad. Consequently, a large number of other manufacturers began offering pistols based on CZ 75 design (see Clones, copies, and variants by other manufacturers ). The pistol

9072-764: The devastation of the First World War and the destabilising effects of not just the collapse of the Russian Empire , but the destruction of the German , Austro-Hungarian , and Ottoman Empires , as well. There were numerous new or restored countries in Southern, Central, and Eastern Europe, some small in size, such as Lithuania and Latvia , and some larger, such as Poland and the Kingdom of Serbs, Croats, and Slovenes . The United States gained dominance in world finance. Thus, when Germany could no longer afford war reparations to Britain, France and other former members of

9198-573: The dominant power in the Mediterranean that would be able to challenge France or Britain, as well as attain access to the Atlantic and Indian Oceans . Mussolini alleged that Italy required uncontested access to the world's oceans and shipping lanes to ensure its national sovereignty. This was elaborated on in a document he later drew up in 1939 called "The March to the Oceans", and included in

9324-555: The expectations and failures of the League of Nations ; the relationships of the new countries to the old; the distrustful relations of the Soviet Union to the capitalist world; peace and disarmament efforts; responses to the Great Depression starting in 1929; the collapse of world trade; the collapse of democratic regimes one by one; the growth of efforts at economic autarky; Japanese aggressiveness toward China , occupying large amounts of Chinese land, as well as border disputes between

9450-428: The fans, in addition to palatial cinemas. The mechanisation of agriculture continued apace, producing an expansion of output that lowered prices, and made many farm workers redundant. Often they moved to nearby industrial towns and cities. The Great Depression was a severe worldwide economic depression that took place after 1929. The timing varied across nations; in most countries it started in 1929 and lasted until

9576-415: The firing pin during manual manipulation. These changes resulted in the basic mold of all subsequent CZ 75 models. Starting in the mid-1990s, the CZ 75 was updated to the B model, chiefly with the addition of a firing pin block . Almost all CZ 75 models produced after this time, excepting some competition models, employ this safety feature. Interwar period In the history of the 20th century ,

9702-525: The gun in five years, in which time he only needed to change the barrel once in order to maintain precision. The CZ 75 is a short recoil operated, locked breech pistol. It uses the Browning linkless cam locking system similar to that used in the Browning Hi-Power pistol, where the barrel and slide are locked together on firing, using locking lugs milled into the barrel mating with recesses in

9828-657: The influence of Rome to prevail over that of Berlin in the future politics of Spain". Italy intervened in the civil war with the intention of occupying the Balearic Islands and creating a client state in Spain. Italy sought the control of the Balearic Islands due to its strategic position—Italy could use the islands as a base to disrupt the lines of communication between France and its North African colonies and between British Gibraltar and Malta . After

9954-555: The innovations of WWI and the interwar period would see a shift away from 'traditional' line- and front-based warfare and towards a significantly more mobile, mechanized, and asymmetric form of combat. Following the Armistice of Compiègne on 11 November 1918 that ended World War I, the years 1918–1924 were marked by turmoil as the Russian Civil War continued to rage on, and Eastern Europe struggled to recover from

10080-511: The late 1930s. It was the longest, deepest, and most widespread depression of the 20th century. The depression originated in the United States and became worldwide news with the stock market crash of 29 October 1929 (known as Black Tuesday ). Between 1929 and 1932, worldwide GDP fell by an estimated 15%. By comparison, worldwide GDP fell by less than 1% from 2008 to 2009 during the Great Recession . Some economies started to recover by

10206-592: The lead. U.S. Secretary of State Charles Evans Hughes sponsored the Washington Naval Conference of 1921 in determining how many capital ships each major country was allowed. The new allocations were actually followed and there were no naval races in the 1920s. Britain played a leading role in the 1927 Geneva Naval Conference and the 1930 London Conference that led to the London Naval Treaty , which added cruisers and submarines to

10332-730: The list of ship allocations. However the refusal of Japan, Germany, Italy and the USSR to go along with this led to the meaningless Second London Naval Treaty of 1936. Naval disarmament had collapsed and the issue became rearming for a war against Germany and Japan. The Roaring Twenties highlighted novel and highly visible social and cultural trends and innovations. These trends, made possible by sustained economic prosperity, were most visible in major cities like New York City , Chicago , Paris , Berlin , and London . The Jazz Age began and Art Deco peaked. For women, knee-length skirts and dresses became socially acceptable, as did bobbed hair with

10458-499: The long-recoil operated Auto-5 . Both the Benelli and Browning systems are based on a rotating locking bolt, similar to that used in many gas-operated firearms. Before firing, the bolt body is separated from the locked bolt head by a stiff spring. As the shotgun recoils after firing, inertia of the bolt body is large enough for it to remain stationary while the recoiling gun and locked bolt head move rearward. This movement compresses

10584-690: The major Chinese cities and industrial areas. A puppet government was set up. In the U.S., government and public opinion—even including those who were isolationist regarding Europe—was resolutely opposed to Japan and gave strong support to China. Meanwhile, the Japanese Army fared badly in large battles with the Soviet Red Army in Mongolia at the Battles of Khalkhin Gol in summer 1939. The USSR

10710-474: The mechanism not to work correctly, unless a device is fitted to boost the recoil. Recoil-operated designs are broadly categorized by how the parts move under recoil. Long recoil operation is found primarily in shotguns , particularly ones based on John Browning 's Auto-5 action. In 1885 a locked breech, long recoil action was patented by the Britons Schlund and Arthur. In a long recoil action,

10836-547: The mid-1930s. However, in many countries, the negative effects of the Great Depression lasted until the beginning of World War II. The Great Depression had devastating effects in countries both rich and poor . Personal income , tax revenue , profits , and prices dropped, while international trade plunged by more than 50%. Unemployment in the United States rose to 25% and in some countries rose as high as 33%. Prices fell sharply, especially for mining and agricultural commodities. Business profits fell sharply as well, with

10962-437: The most advanced Western European models. They started with textiles, railways, and shipping, expanding to electricity and machinery. The most serious weakness was a shortage of raw materials. Industry ran short of copper, and coal became a net importer. A deep flaw in the aggressive military strategy was a heavy dependence on imports including 100 per cent of the aluminium, 85 per cent of the iron ore, and especially 79 per cent of

11088-509: The most. The Weimar Republic in Germany gave way to two episodes of political and economic turmoil, the first culminated in the German hyperinflation of 1923 and the failed Beer Hall Putsch of that same year. The second convulsion, brought on by the worldwide depression and Germany's disastrous monetary policies, resulted in the further rise of Nazism . In Asia, Japan became an ever more assertive power, especially with regard to China . Democracy and prosperity largely went together in

11214-491: The occupation became a loss-making deal for the French government. But the hyperinflation caused many prudent savers to lose all the money they had saved. Weimar added new internal enemies every year, as anti-democratic Nazis , Nationalists , and Communists battled each other in the streets. Germany was the first state to establish diplomatic relations with the new Soviet Union . Under the Treaty of Rapallo , Germany accorded

11340-729: The oceans. In the Balkans , the Fascist regime claimed Dalmatia and held ambitions over Albania , Slovenia , Croatia , Bosnia and Herzegovina , Macedonia , and Greece based on the precedent of previous Roman dominance in these regions. Dalmatia and Slovenia were to be directly annexed into Italy while the remainder of the Balkans was to be transformed into Italian client states. The regime also sought to establish protective patron-client relationships with Austria , Hungary , Romania , and Bulgaria . In both 1932 and 1935, Italy demanded

11466-468: The official records of a meeting of the Grand Council of Fascism . This text asserted that maritime position determined a nation's independence: countries with free access to the high seas were independent; while those who lacked this, were not. Italy, which only had access to an inland sea without French and British acquiescence, was only a "semi-independent nation", and alleged to be a "prisoner in

11592-811: The oil supplies. It was one thing to go to war with China or Russia, but quite another to be in conflict with the key suppliers, especially the United States, Britain, and the Netherlands, of oil and iron. Japan joined the Allies of the First World War to make territorial gains. Together with the British Empire, it divided up Germany's territories scattered in the Pacific and on the Chinese coast ; they did not amount to very much. The other Allies pushed back hard against Japan's efforts to dominate China through

11718-666: The original Browning action design, and the "humpbacked" appearance of the original Auto-5. Other weapons based on the Browning system were the Remington Model 8 semi-automatic rifle (1906), the Remington Model 11 & "The Sportsman" model (a model 11 with only a two-shell magazine) shotguns, the Frommer Stop line of pistols (1907), and the Chauchat automatic rifle (1915). The short recoil action dominates

11844-412: The patent agent Frank Wirth by a German called Otto Emmerich. Finally came Maxim's 1883 automatic recoil operated machine gun which introduced the modern age of automatic machine guns. The same forces that cause the ejecta of a firearm (the projectile(s), propellant gas, wad, sabot , etc.) to move down the barrel also cause all or a portion of the firearm to move in the opposite direction. The result

11970-409: The politico-military encirclement of Italy. Thus Greece, Turkey, and Egypt must be considered vital enemies of Italy's expansion ... The aim of Italian policy, which cannot have, and does not have continental objectives of a European territorial nature except Albania, is first of all to break the bars of this prison ... Once the bars are broken, Italian policy can only have one motto—to march to

12096-417: The prosperous Roaring Twenties , a time of social and economic mobility for the middle class . Automobiles , electric lighting , radio , and more became common among populations in the first world . The era's indulgences were followed by the Great Depression , an unprecedented worldwide economic downturn that severely damaged many of the world's largest economies. Politically, the era coincided with

12222-465: The recoil force of a blank round (with no projectile) with the greater force of a live round, in order to allow the mechanism to cycle properly. Several revolvers use recoil to cock the hammer and advance the cylinder. In these designs, the barrel and cylinder are affixed to an upper frame which recoils atop a sub-frame. As the upper receiver recoils, the cylinder is advanced and hammer cocked, functions that are usually done manually. Notable examples are

12348-621: The region inhabited by ethnic Germans called the Sudetenland in Czechoslovakia , the remilitarisation of the League of Nations demilitarised zone of the German Rhineland region, and the last, desperate stages of rearmament as the Second World War increasingly loomed. Disarmament was a very popular public policy. However, the League of Nations played little role in this effort, with the United States and Britain taking

12474-697: The rise of communism , starting in Russia with the October Revolution and Russian Civil War , at the end of WWI, and ended with the rise of fascism , particularly in Germany and Italy. China was in the midst of a half-century of instability and the Chinese Civil War between the Kuomintang the Chinese Communist Party and many warlords. The empires of Britain , France , and others faced challenges as imperialism

12600-429: The roof of the slide. An enclosed cam track integral with the barrel is actuated by the slide release lever's transverse pin. After the first few millimetres of the recoil stroke, the barrel is cammed downwards at the rear, enabling the slide to continue the recoil stroke and eject the spent cartridge. The CZ 75 was one of the first Wonder Nine handguns; most models have double-action/single action triggers and feature

12726-482: The same capacity as the standard CZ 75 magazines (15/16 in 9mm, 12 in .40 S&W) remained. The CZ 75 ST (Standard) and CZ 75 M (Modified) were introduced in 1998. These had a different frame from standard versions allowing for more modifications. While the ST had become very successful, M was not initially designed for use with red-dot sights, the use of which led to limited lifespan of its frame. The popular ST version

12852-659: The short recoil design is most common in pistols, the very first short-recoil–operated firearm was also the first machine gun , the Maxim gun . It used a toggle bolt similar to the one Borchardt later adapted to pistols. Vladimirov also used the short recoil principle in the Soviet KPV-14.5 heavy machine gun which has been in service with the Russian military and Middle Eastern armed forces since 1949. Melvin Johnson also used

12978-458: The short recoil principle in his M1941 Johnson machine gun and M1941 rifle, other rifles using short recoil are LWRCI SMG 45 and LoneStar Future Weapons RM-277R . An alternative design concept for recoil-operated firearms is the inertia operated system, the first practical use of it being the Sjögren shotgun , developed by Carl Axel Theodor Sjögren in the early 1900s, a Swedish engineer who

13104-435: The sport shooters were using CZ 75s and CZ 85s . Stanislav Křižík designed a new version called CZ 75 Champion already in 1992. This version had a SA trigger , a muzzle brake and adjustable weights. 150 weapons were initially made in 9×19mm Parabellum , .40 S&W and 9×21mm . The design was further modified (i.e. the adjustable weights were eliminated, a new compensator was developed), however its main shortcoming of

13230-416: The spring between the bolt head and bolt body, storing the energy required to cycle the action. Since the spring can only be compressed a certain amount, this limits the amount of force the spring can absorb, and provides an inherent level of self-regulation to the action, allowing a wide range of shotshells to be used, from standard to magnum loads, as long as they provide the minimum recoil level to compress

13356-444: The spring. Note that the shotgun must be free to recoil for this to work—the compressibility of the shooter's body is sufficient to allow this movement, but firing the shotgun from a secure position in a rest or with the stock against the ground will not allow it to recoil sufficiently to operate the mechanism. Likewise, care must be exercised when modifying weapons of this type (e.g. addition of extended magazines or ammunition storage on

13482-404: The stock), as any sizable increase in weapon mass can reduce the work done from recoil below that required to cycle the action. As the recoil spring returns to its uncompressed state, it pushes the bolt body backward with sufficient force to cycle the action. The bolt body unlocks and retracts the bolt head, extracts and ejects the cartridge, cocks the hammer, and compresses the return spring. Once

13608-749: The swinging link and locking lugs as used in the M1911 pistol or the linkless cam design used in the Hi Power and CZ 75 . Other designs are the locking block design found in the Walther P38 and Beretta 92 , rollers in the MG42 , or a rotating barrel used in the Beretta 8000 and others. An unusual variant is the toggle bolt design of the Borchardt C-93 and its descendant, the Luger pistol . While

13734-864: The total population, 64.7 million lived in Africa and 31.2 million lived in Asia; 900,000 lived in the French West Indies or islands in the South Pacific. The largest colonies were French Indochina with 26.8 million (in five separate colonies), French Algeria with 6.6 million, the French protectorate in Morocco , with 5.4 million, and French West Africa with 35.2 million in nine colonies. The total includes 1.9 million Europeans, and 350,000 "assimilated" natives. The Berber independence leader Abd el-Krim (1882–1963) organised armed resistance against

13860-565: The victory by Franco and the Nationalists in the war, Allied intelligence was informed that Italy was pressuring Spain to permit an Italian occupation of the Balearic Islands . After Great Britain signed the Anglo-Italian Easter Accords in 1938, Mussolini and Foreign Minister Galeazzo Ciano issued demands for concessions in the Mediterranean by France, particularly regarding French Somaliland , Tunisia and

13986-428: The war effort combined with failures of the previous systems' of Government made it more difficult than hitherto to maintain that women were, both by constitution and temperament, unfit to vote. If women could work in munitions factories, it seemed both ungrateful and illogical to deny them a place in the polling booth. But the vote was much more than simply a reward for war work; the point was that women's participation in

14112-452: The war helped to dispel the fears that surrounded women's entry into the public arena. In Europe, according to Derek Aldcroft and Steven Morewood, "Nearly all countries registered some economic progress in the 1920s and most of them managed to regain or surpass their pre-war income and production levels by the end of the decade." The Netherlands, Norway, Sweden, Switzerland, and Greece did especially well, while Eastern Europe did poorly, due to

14238-466: The world of centerfire semi-automatic pistols , being found in nearly all weapons chambered for high-pressure pistol cartridges of 9×19mm Parabellum and larger, while low-pressure pistol cartridges of .380 ACP and smaller generally use the blowback method of operation. Short recoil operation differs from long recoil operation in that the barrel and bolt recoil together only a short distance before they unlock and separate. The barrel stops quickly, and

14364-471: Was a decline in pacifism and a growing sense that another world war was imminent, and that it would be worth fighting for. The changing world order that the war had brought about, in particular the growth of the United States and Japan as naval powers, and the rise of independence movements in India and Ireland, caused a major reassessment of British imperial policy. Forced to choose between alignment with

14490-623: Was also factionalised. Large-scale warfare, known as the Second Sino-Japanese War , began in August 1937, with naval and infantry attacks focused on Shanghai , which quickly spread to other major cities. There were numerous large-scale atrocities against Chinese civilians, such as the Nanjing massacre in December 1937, with mass murder and mass rape. By 1939 military lines had stabilised, with Japan in control of almost all of

14616-475: Was awarded a number of patents for his inertia operated design between 1900 and 1908 and sold about 5,000 automatic shotguns using the system in 1908–1909. In a reversal of the other designs, some inertia systems use nearly the entire firearm as the recoiling component, with only the bolt remaining stationary during firing. Because of this, the inertia system is only applied to heavily recoiling firearms, particularly shotguns. A similar system using inertia operation

14742-612: Was exiled in the Pacific until 1947. Morocco was now pacified, and became the base from which Spanish Nationalists would launch their rebellion against the Spanish Republic in 1936. The humiliating peace terms in the Treaty of Versailles provoked bitter indignation throughout Germany, and seriously weakened the new democratic regime. The Treaty stripped Germany of all of its overseas colonies , of Alsace–Lorraine , and of predominantly Polish districts. The Allied armies occupied industrial sectors in western Germany including

14868-675: Was forced to acknowledge that his policy of appeasement towards Hitler had failed. In 1922, the leader of the Italian Fascist movement, Benito Mussolini , was appointed Prime Minister of Italy after the March on Rome . Mussolini resolved the question of sovereignty over the Dodecanese at the 1923 Treaty of Lausanne , which formalised Italian administration of both Libya and the Dodecanese Islands , in return for

14994-537: Was further developed mostly with aim of prolonging its lifespan, which led to introduction of CZ 75 TS (Tactical Sports) in 2005. It uses a longer barrel (132 mm) and has also a higher weight (1,285 g) compared to the standard model. High-capacity magazines may use either 20 of the 9mm rounds or 17 of the .40 rounds. As of 2013, the model is used by the CZUB's factory shooters in the IPSC Standard division, with

15120-743: Was increasingly viewed negatively and independence movements emerged in many colonies ; in Europe, after protracted low-level fighting most of Ireland became independent. The Russian , Ottoman , Austro-Hungarian , and German Empires were dismantled, with the Ottoman territories and German colonies redistributed among the Allies , chiefly Britain and France. The western parts of the Russian Empire, Estonia , Finland , Latvia , Lithuania , and Poland became independent nations in their own right, and Bessarabia (now Moldova and parts of Ukraine ) chose to reunify with Romania . In Russia,

15246-407: Was joined by Italy a year later in 1937 – Hitler felt able to take the offensive in foreign policy. On 12 March 1938, German troops marched into Austria, where an attempted Nazi coup had been unsuccessful in 1934. When Austrian-born Hitler entered Vienna , he was greeted by loud cheers. Four weeks later, 99% of Austrians voted in favour of the annexation ( Anschluss ) of their country Austria to

15372-421: Was not renewed in 1922 because of heavy pressure on Britain from Canada and the United States. In the 1920s Japanese diplomacy was rooted in a largely liberal democratic political system, and favoured internationalism. By 1930, however, Japan was rapidly reversing itself, rejecting democracy at home, as the Army seized more and more power, and rejecting internationalism and liberalism. By the late 1930s it had joined

15498-719: Was not sold in Czechoslovakia until 1985, when it became popular among sport shooters ( sport shooting is the third most widespread sport in the Czech Republic, after football and ice hockey ). It was adopted by the Czech armed forces only after the Velvet Revolution in 1989. The increasing popularity of the IPSC competitions in the Czech Republic led to inception of CZUB 's factory team in 1992. Initially,

15624-522: Was taken by Greece to the League of Nations , where Mussolini was convinced by Britain to evacuate Royal Italian Army troops, in return for reparations from Greece. The confrontation led Britain and Italy to resolve the question of Jubaland in 1924, which was merged into Italian Somaliland . During the late 1920s, imperial expansion became an increasingly favoured theme in Mussolini's speeches. Amongst Mussolini's aims were that Italy had to become

15750-551: Was then developed by Paolo Benelli in the early 1980s and patented in 1986. With the exception of Sjögren's shotguns and rifles in the early 1900s, all inertia-operated firearms made until 2012 were either made by Benelli or used a design licensed from Benelli, such as the Franchi Affinity. Then the Browning Arms Company introduced the inertia-operated A5 (trademarked as Kinematic Drive) as successor to

15876-475: Was too powerful. Tokyo and Moscow signed a nonaggression treaty in April 1941 , as the militarists turned their attention to the European colonies to the south which had urgently-needed oil fields. To one degree or another, Spain had been unstable politically for centuries, and in 1936–1939 was wracked by one of the bloodiest civil wars of the 20th century. The real importance comes from outside countries. In Spain

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