Caliber: 5.56 NATO or .223 Rem. Several builds make up the Fulton Armory AR lineup, six with fixed stocks, and five with front sight posts. Legacy specs include the Upper Receiver: M16 Slick Side, with new A1 rear sight (forged, machined, anodized). Retro 601 charging handle. Parts: GI mil-spec, GI Chrome M16/AR15 HPT/MPI Bolt with HD extractor spring, early slip ring. Barrel: 20 in. 1x12, "pencil" profile, match quality, chrome-lined, .223/5.56 NATO hybrid match chamber. Handguard: New M16, triangular. Gas Block/Front Sight: Forged, with bayonet lug, taper pinned. Front Sight Post: A1, round. Muzzle Device: 3-prong flash suppressor. Lower Receiver: FA, with Accu-wedge (forged, machined, anodized, & Teflon coated per mil-spec). Butt Stock: Fixed, A1 with A1 butt plate. Grip: A1. Trigger: Standard military, single-stage. Included accessories: FA 10-round magazine, OD cotton web sling, and owner's manual. Precision Guarantee: 1.5 MOA with Federal Gold Medal Match Ammunition. Weight: 6.75 lbs. Length: 39 in.