Alex Pro Firearms RI084M: 14.5 4150CM Nitride-Coated Barrel (1:8 Twist) - .750 Mid-Length Gas System - Diamond-Honed Nitride M16 BCG (6.5 Grendel Bolt Face) - APF 4.5 lb. Drop-In Trigger - APF Adjustable Gas Block - SBA3 Pistol Brace - Magpul MOE Grip - APF 13 M-Lok Handguard - Billet Receiver Set - Ambidextrous Controls - Caliber/ Gauge: 6.5 Grendel - Barrel Length: 14.5 4150CM Nitride- Coated Barrel (1:8 Twist) - Action: Semi-Auto - Front Sight: Rear Sight: None - Color: Black - Finish: Cerakote - Material: Aluminum - Hand: Right