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GM6“山猫”12.7mm反器材步枪采用浮动式枪管设计,发射后,枪管与枪机系统一同后坐一段距离后停止后坐,开锁并与枪机分离,枪管在枪管缓冲簧的作用下复进到位,与此同时枪机继续后坐完成抛壳动作,继续后坐到位后在复进簧作用下往前复进并推弹入膛,完成装填动作。整个后坐过程,通过枪管缓冲簧与枪机复进簧对后坐能量的吸收和缓慢的释放,达到减小后坐力的效果,再加上枪管上安装的高效枪口制退器,使得该枪的后坐感非常小,射手甚至可以采用立姿射击。该枪的另一特别之处是其枪管可缩入机匣内,以方便携行。但枪管缩入机匣时,枪械不能发射。
GM6 “Bobcats ” 12.7mm anti-material rifle with floating barrel design, after launching, the barrel and the bolt system sit together after a distance to stop sitting, unlocking and separation with the bolt, the barrel in the barrel buffer spring Under the action of reentry in place, at the same time, the bolt continued to sit after the completion of throwing shell action, continue to sit back in the next into the spring under the action of complex forward and push bombs, complete the filling action. Throughout the recoil process, the recoil energy absorption and slow release of the recoil spring by the barrel buffer spring and the bolt return to the effect of reducing the recoil force, combined with the efficient gun muzzle brake installed on the barrel, so that the gun Sense of recoil is very small, Sagittarius can even use vertical position shooting. Another special feature of this gun is that its barrel can be retracted into the receiver for easy access. However, when the barrel is retracted into the receiver, the firearm can not be fired.