The rifle is the weapon of choice for the military and law enforcement agencies. The weapon is noted for its versatility, reliability and economy. Unfortunately, multiple firing modes, ammunition loads, and a wide range of available accessories can exacerbate "muzzle rise" and compromise the real performance that the gun can achieve.

The rear buffer is a buffer that reduces hydraulic rate/recoil and can be directly "plugged in" to replace the existing mechanical buffer. It utilizes hydraulic power to provide significant benefits to help minimize the effects of "muzzle rise" and produce large performance results from these weapons.