Windham Weaponry MPC-RF withBlack A2 Grips 5.56mm NATO 16in Black Semi Automatic Modern Sporting Rifle - 30+1 Rounds - 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 M4/A4-type flat top upper receiver is made of forged 7075 T6 aircraft aluminum with an aluminum trigger guard and a hardcoat black anodize finish. The 16in M4 profile barrel is made of chrome-lined 4150 chrome moly vanadium steel with an A2 flash suppressor. It has a 6-position telescoping buttstock with M4 Double Heat Shield handguards 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 Diamondhead rear flip sight. Forged 7075 T6 Aircraft Aluminum with Aluminum Trigger Guard, Hardcoat Black Anodize Finish, 16in M4 Profile, Chrome Lined w. A2 Flash Suppressor, 4150 Chrome Moly Vanadium Steel. 6-Position Telescoping Buttstock with M4 Double Heat Shield Handguards / Black Phenolic Plastic Grip. Gas Impingement System Manual Safety Lever with Indicator Markings on Both Sides of Receiver M4A4 Type Flat Top Upper Receiver with Detachable Carry Handle Forged 7075 T6 Aircraft Aluminum with Aluminum Trigger Guard