The AM-10 Battle Rifle is a fresh take on the classic 308 Winchester AM-10. - Featuring the newly redesigned Generation 2 Receivers and Handguard. - The Battle Rifle comes standard with: - 16 inch .308 Winchester Mid-length Barrel - 15 inch M-Lok Handguard - Magpul Carbine Buttstock - Magpul K2 Pistol Grip - Weight 8 - Lower Receiver Material Forged 7075 T6 Aluminum - Upper Receiver Material Forged 7075 T6 Aluminum - Upper Receiver Finish Type 3 Hard Anodized Black - Lower Receiver Finish Type 3 Hard Anodized Black - Trigger Guard Closed Trigger - RF-85 Treated Non-treated - Bolt Carrier Finish Nitride - Bolt Carrier Material 8620 Steel - Bolt Finish Nitride - Bolt Material 9310 Steel - Barrel Material 4150 Chrome Moly Vanadium - Barrel Length 16 inches - Barrel Finish Nitride - Barrel Contour Government Profile - Twist Rate 1:10 - Gas System Length Mid Length - Gas System Type Low Profile - Gas Block Diameter .750 inch - Charging Handle Standard Charging Handle - Hand Guard Type M-Lok - Handguard M-Lok - Hand Guard Length 15 inches - Pistol Grip Magpul K2 - Thread Pattern 5/8-24 - Muzzle Device A2 Flash Hider - Buffer Tube 6 Position Buffer Tube - Butt Stock/Brace Magpul - 20rd PMAG