Sockets for Quick Disconnect (QD) sling swivels located at the muzzle end of the handguard allows for comfortable carry with a two point sling. The rifle length gas system features a 0.750″ 4 position rotary regulator gas block to achieve ideal function across the wide range of ammunition available in the marketplace today. The included, on board 3/16″ ball end wrench makes for easy regulator adjustment. Equipped with a Ruger Elite 452 trigger that delivers a smooth, crisp 4.5 pound 2 stage trigger pull. A full strength hammer spring and lightweight hammer ensure fast lock times and consistent primer ignition. Made from a 7075 T6 hard coat anodized aluminum forging, the upper receiver is complete with brass deflector, forward assist, and full length Picatinny rail. The lower receiver features a generous flare on the magazine well for easy magazine insertion. UPC 736676056118 Action SEMI AUTOMATIC Barrel Length 20 BARREL Caliber .308 WIN Capacity 20 ROUNDS Finish BLACK Weight 7.3 LBS. Receiver Material 7075 T6 ALUMINUM