Caliber: 350 Legend - Stock: Black Synthetic Collapsible - Handguard: Free-Float With Magpul® M-LOK® Slots - Sights: None - Barrel Length: 16.38 - Thread Pattern: 1/2-28 x 0.4 - Twist: 1:16 RH - Capacity: 5 - Finish: Type III Hard Coat Anodized - Height: 7.30 - Weight: 6.6 lb. - Overall Length: 33.38 - 36.63 - Length of Pull: 11.10 - 14.40 - Grooves: 5 - Lower receiver is fitted with Magpul® MOE® grip and MOE SL® collapsible buttstock on a Mil-Spec buffer tube. - Handguard is free-floated for accuracy and the slim 15 length provides enhanced ergonomics. - Bolt is mil-spec 9310 and is machined and shot peened for strength and durability. - The Ruger® Elite 452® AR-Trigger is a two-stage trigger that offers a smooth crisp 4.5 pound trigger pull. It features a full-strength hammer spring for consistent primer ignition and a lightweight hammer that enables a faster lock time for improved accuracy. - 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. - Ruger® muzzle brake is a radial port design that significantly reduces felt recoil and muzzle movement. The threaded barrel allows for standard muzzle accessories to be installed. - Cold hammer-forged 4140 chrome-moly steel barrel with ultra-precise rifling provides exceptional accuracy longevity and easy cleaning. Optimized feed ramp provides improved reliability and the matte black nitrided finish provides corrosion resistance. - Made from aerospace-grade 7075-T6 aluminum forging the flat top upper receiver includes a forward assist dust cover and brass deflector and is Type III hard coat anodized for maximum durability. - Bolt carrier and gas key have chrome-plated inside diameters to provide exceptional resistance to hot gases. The gas key is staked so that it will not loosen after extensive firing. - Pistol-length gas system provides smoother operation and reduces felt recoil. - Also includes: one magazine.