Lower receiver is fitted with Magpul MOE grip and MOE SL collapsible buttstock on the Mil-Spec buffer tube; Handguard is free-floating for accuracy and the slim, 15″ length provides enhanced ergonomics and support; Made from aerospace-grade 7075-T6 aluminum forging, the flattop upper receiver includes a forward assist, dust cover and brass deflector, and is Type III hard coat anodized for maximum durability; Bolt is machined from 9310 alloy steel and is shot peened and pressure (proof) tested to ensure strength, structural integrity and durability; Two-stage Ruger Elite 452 AR-Trigger offers a smooth, crisp, 4.5 pound trigger pull; Rifle-length gas system provides smoother operation and reduces felt recoil; Magpul M-LOK accessory attachment slots along the 3:00, 6:00 and 9:00 positions with additional slots on the angled faces near the muzzle; Cold hammer-forged 4140 chrome-moly steel barrel with ultra-precise rifling provides exceptional accuracy, longevity and easy cleaning; Chrome-plated bolt carrier inside diameter and chrome-plated gas key inside diameter provide exceptional resistance to hot gases; Ruger muzzle brake is a radial port design that significantly reduces felt recoil and muzzle movement