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The AR-5 was the basis of the MA-1 aircrew survival rifle, adopted by the US Air Force in 1956, as a replacement for the M6 Aircrew Survival Weapon. The M6 is a superposed ("over-under") combination weapon with a .22 Hornet rifle barrel over a .410 shotgun barrel. While there is an advantage to such a combination, the AR-5 has the advantage of rapid fire, using the same .22 Hornet cartridge as the M6's rifle barrel. The AR-5 was developed by ArmaLite, a division of Fairchild Engine and Airplane Corporation. The AR-5 was submitted in response to an Air Force request shortly after the division was established on October 1, 1954.〔(ArmaLite history PDF )〕 The MA-1 is a four-shot, bolt-action rifle, chambered for the .22 Hornet cartridge, a round somewhat heavier than the common .22 Long Rifle cartridge, with a higher velocity and range, yet with a light, controllable recoil. Designed to be stowed in cramped aircraft cockpits, the rifle was made from lightweight plastics and aluminum alloys. The MA-1 was unique for being able to be disassembled with all working parts stored within the stock. When stowed in this manner, the rifle was able to float.〔Stevens, R. Blake & Edward C. Ezell. The Black Rifle: M16 Retrospective. Cobourg, Canada: Collector Grade Publications, 1987. (Page 22)〕 The MA-1 established ArmaLite as a recognized firearms company, leading to several other rifles of varying success. However, the Air Force never received funding to buy more than the original 12 test models due in part to the number of M4 and M6 survival weapons already in the inventory.〔Duncan Long, ''AR-7 Super Systems'', Paladin Press, 1990. pp.4, 5.〕 Armalite used the research and tooling for the AR-5/MA-1 to develop the AR-7, an eight-shot semi-automatic rifle chambered for the .22 Long Rifle cartridge. Released in 1959〔(ArmaLite history PDF )〕 as a civilian survival weapon, the AR-7 is related to the AR-5 in terms of its overall layout, and retains the same modular takedown, storage in stock, and the ability to float. ==See also== *M4 Survival Rifle *M6 Aircrew Survival Weapon *Marble Game Getter *List of individual weapons of the U.S. Armed Forces *List of firearms 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Armalite AR-5」の詳細全文を読む スポンサード リンク
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