CALIBER5.56 NATO – BARREL 16 1:8 Twist – WEIGHT 6 lbs. – UPPER RECEIVER Forged 7075 T6 Aluminum Type 3 Hard Anodized Black – LOWER RECEIVER Forged 7075 T6 Aluminum Type 3 Hard Anodized Black – HAND GUARD 6 A2 Plastic – THREAD PATTERN 1/2 – 28 – MUZZLE DEVICE A2 Flash Hider – GAS BLOCK .750 Diameter – GAS SYSTEM High Rise Carbine Length – BUTTSTOCK 6 Position Carbine Buttstock – BUFFER TUBE 6 Position Buffer Tube – BOLT CARRIER Standard M16 Profile – CHARGING HANDLE Standard – PISTOL GRIP A2 Style – SAFETY Ambidextrous