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BFR-556A轻机枪是在M4卡宾枪基础上研制的一款既可采用弹链供弹也可采用弹匣供弹的轻机枪,但仅能半自动发射5.56×45 NATO弹,该枪在机匣左侧加装了一个弹链供弹机构,可采用M249轻机枪配用的M27可散式弹链供弹,弹链可快速卸下,以转换成弹匣供弹。半自动发射的轻机枪实战意义不大,因此这种改装仅仅为了外形炫酷而已。Slide Fire武器公司还在该枪上应用了其获得专利的SSAR-15模块化枪托/握把组件,伸
BFR-556A light machine gun is developed on the basis of the M4 carbine, which can be used both for the bomb and the magazine for the bullet, but only semi-automatic firing 5.56 × 45 NATO bombs, the gun in the left Side mounted a chain for the bomb mechanism, can be used M249 light machine gun equipped with M27 dispersible spring chain for the bomb, the chain can be quickly removed to convert into a magazine for the bomb. Semi-automatic launch of light machine gun actual combat significance, so this modification is just cool appearance only. Slide Fire weapons company also applied the patented SSAR-15 modular butt / grip assembly to the gun