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话题: aa 12 shotgun
描述为 aa 12 shotgun
The Auto Assault-12 (AA-12) (originally designed and known as the Atchisson Assault Shotgun) is a shotgun developed in 1972 by Maxwell Atchisson. The current 2005 version has been developed over 18 years since the patent was sold to Military Police Systems, Inc. The original design was the basis of several later weapons, including the USAS-12 combat shotgun. The weapon is selective fire, operating as a semi-automatic, or in fully automatic mode at 300 rounds per minute. It is fed from either a 8-shell box magazine, or a 20-shell drum magazine. In 1987, Max Atchisson sold the rights of AA-12 to Jerry Baber of Military Police Systems, Inc. The company in turn developed the successor simply known as Auto Assault-12, which was redesigned over a period of 18 years with 188 changes and improvements to the original blueprint.
定义 aa 12 shotgun
an associate degree in arts
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