美军制式M4卡宾枪存在的一个问题是,其护手只包裹住枪管的一半长度,造成士兵不易携行,特别是持续射击后转移阵地时,因枪管滚烫,士兵只能握持有限的护手部分。如今,这个问题在CMMG公司的手中得到了解决,当然,在解决这个问题时,公司还重新设计了抛壳问题,并且在各组件的精密配合下,射击精度也获得提升,堪比高精度狙击步枪—— A problem with the U.S. M4 carbines is that their handguards encircle only half the barrel length, making them less portable, especially when the firing range is shifted after a continuous firing. Soldiers can only hold a limited range of handguards section. Now, the problem is solved by CMMG. Of course, when solving this problem, the company has redesigned the problem of throwing shell. And with the precise cooperation of various components, the shooting precision is also improved, which is comparable to the high-precision sniper rifle--