Description Ruger's AR-556 semi-automatic rifle is made from forged aerospace-grade 7075-T6 aluminum. The hard coat anodized, flattop upper receiver includes a forward assist, dust cover and brass deflector, while the handguards are made from heat-resistant glass-filled nylon. It has a carbine-length, milled gas block with multiple attachment points for a QD socket, bayonet lug, and sling. Serrations on the angled face of the gas block provides a low-glare surface. The Rapid Deploy folding rear sight provides windage adjustability and the front sight post is elevation adjustable, and includes a front sight tool. The A2-style F-height allows co-witness with many optics. It also has a bolt machined from 9310 alloy steel, single-stage trigger, chrome-plated bolt carrier with a matte black oxide finish on the exterior, and patent pending barrel nut and Delta ring for one person handguard removal and installation. This model has a black Magpul MOE six-position buttstock, Magpul MOE M-LOK handguard, and a Magpul PMAG.Features:Caliber: 223 Remington / 5.56 NATOModel: AR-556Series: AutoloadingAction: Semi-AutomaticSights: AdjustableCapacity: 30+1Muzzle: ThreadedHand: RightMetal Finish: Black Hardcoat AnodizedOAL: 32.25"-35.5"Receiver Material: 7075 T6 AluminumSafety: ManualStock Description: Magpul MOE BlackTrigger: Single-StageTwist: 1:8"Weight: 6.5 lbsBarrel Description: Cold Hammer-Forged Firearms, trailers, and some accessories are only available for purchase in stores. Each location follows all BATF and individual state/county/city laws to insure the desired product is legal for sale. Any info provided online is subject to change, please go to your local store for more accurate information.