机匣

机匣Receiver)是枪械的一部分,是用来接纳整合枪管护木枪机(包括枪栓、扳机、火控等组件)、弹匣枪托等其它枪械部件的匣室,同时还可以在上方配备外置附件(比如导轨界面系统瞄具)。[1] 机匣通常由熔炼、冲压的制成[2],但是一些现代手枪和步枪已经开始使用高强度塑料作为机匣材料。

在现代半自动自动步枪中,机匣要远远大于传统步枪设计中的尺寸,并且取代了传统设计中的枪托前部(前托)并承担了其支撑结构的功能。现代设计的机匣可以被分拆成上机匣(upper receiver)和下机匣(lower receiver)两部分,上机匣容纳枪机组件(bolt carrier group)并与枪管护木相连;下机匣容纳扳机组件(trigger group)和火控组件(fire control group)并与握把、弹匣后托相连。

對於现代半自动手枪而言,滑套(slide)和底把(frame)在功能上可以与现代步枪的上、下机匣大致对应。

参考文献

  1. . US Government. 2016 [16 September 2016]. Firearm frame or receiver. That part of a firearm which provides housing for the hammer, bolt or breechblock, and firing mechanism, and which is usually threaded at its forward portion to receive the barrel.
  2. . [5 Aug 2010].
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