f you only wanted one tactical precision 5.56mm rifle this should be the one. Somewhere between the 18î mid-length stainless fluted teflon coated barrel, MagpulÆ PRS stock, and free floating rail system, weíve made one of the most accurate 5.56mm rifles on the market. Stainless steel barrel with flash hider and 6 grooves, right-hand 1x8 twist and button rifled. Heat treated steel bolt carrier and phosphated steel bolt are plated per Mil Spec. Mangonel front and rear flip-up sights. Upper receiver: A3 forged flattop, aircraft aluminum alloy, hard coat anodized per Mil Spec and Teflon coated black, dust cover, shell deflector, round forward assist and right hand ejection. Lower receiver: Forged aircraft aluminum alloy, hard coat anodized per Mil Spec and Teflon coated black, integral trigger guard, Ambi-Selector installed. JP adjustable trigger. Standard length handguard 4-rail free float tube, vented. Includes 9 wide rail covers. Panther Tactical Grip. Harris 9-13 inch swivel series bipod.