Action: Semi-Auto - Caliber: 5.56 NATO - Capacity: 20rd - Barrel: 16.1 (1:9) with Flash Suppressor Blued - Sights: Adjustable Rear Blade Front - Receiver: Alloy Steel Blued - Stock: Synthetic Black - Length of Pull: 13 - Length: 36.75 - Weight: 6.75 lbs. - Simple Rugged-Garand style action with breechbolt locking system a fixed-piston gas system and self-cleaning moving gas cylinder gives unparalleled reliability under harsh operating conditions - Compact hammer-forged barrel with flash suppressor - Accurate sighting system with ghost ring adjustable rear aperture sight and a protected non-glare post front sight - Patented integral scope mounts machined directly on the solid-steel receiver provide a stable mounting surface for scope rings eliminating a potential source of looseness and inaccuracy in the field (scope rings included FREE).