The AM-10 Ranger is a fresh take on the classic 308 Winchester AM-10. Featuring the newly redesigned Generation 2 Receivers and Handguard. – The Ranger comes standard with: – 18 inch .308 Winchester Mid-length Barrel – 15 inch M-Lok Handguard – Magpul Carbine Buttstock – Magpul K2 Pistol Grip – 2-Stage Trigger System – 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: 18 inch – Barrel Finish: Nitride – Barrel Contour: Government Profile – Twist Rate: 1:10 – Fluting: None – 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 – Hand Guard Length: 15 inch – Pistol Grip: Magpul K2 – Thread Pattern: 5/8-24 – Muzzle Device: Knight Stalker Flash Hider – Buffer Tube: 6 Position Buffer Tube – Butt Stock/Brace: Magpul