Features: Barrel Length: 10.5" Barrel Material: 4140 Chrome Moly Vanadium Barrel Finish: Melonite Barrel Profile: HBAR Barrel Thread Pitch: 5/8x24 Chamber: 7.62x39mm Twist Rate: 1:8 Barrel Extension: M4 Feed Ramps Gas System: Pistol Length Gas Block Type: .750 Low Profile Gas Block Muzzle Device: A2 Flash Hider Upper Receiver Material: Forged 7075 T6 Upper Receiver Style: M4 MIL-STD Upper Receiver Finish: Type III Anodizing Forward Assist: MIL-STD Dust Cover: MIL-STD Handguard Type: Free Float Handguard Style: M-Lok Thin Rail Handguard Length: 10" Charging Handle: MIL-STD Lower Receiver: Forged 7075 T6 Lower Receiver Finish: Type III Anodizing Safety: MIL-STD Fire Control Group: MIL-STD Buffer Tube: Pistol Tube Magazine: 10 Round