This MPC-RF semi-automatic has a gas impingement system with a manual safety lever and indicator markings on both sides of the receiver. The M4A4-type flat top upper receiver is made of forged 7075 T6 aircraft aluminum with an aluminum trigger guard and a hard coat black anodize finish. The 16" barrel is made of chrome-lined 4150 chrome moly vanadium steel with an M4 profile and A2 flash suppressor. It has a 6-position telescoping buttstock with M4 Double Heat Shield hand guards and a black plastic grip. It has an adjustable-height square post in a standard A2 front sight base, and this RF model MPC rifle features a removable Diamond head rear flip sight.