Barrel Length: 16″ Barrel Material: 4140 Chrome Moly Vanadium Barrel Finish: Melonite Barrel Profile: SOCOM Barrel Thread Pitch: 1/2×28 Chamber: 5.56mm Twist Rate: 1:7 Barrel Extension: M4 Feed Ramps Gas System: Mid 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: 15″ Charging Handle: MIL-STD Lower Receiver: Forged 7075 T6 Lower Receiver Finish: Type III Anodizing Fire Control Group: Semi-Automatic MIL-STD Grip: B5 Type 23 Pistol Grip Buffer Tube: Carbine MIL-STD Stock Adjustment: 6 Postion Stock: B5 BRAVO Magazine: 5.56mm 30 Round