57 Center Ar 15M16 Ar57 Upper Receiver

Complete upper receiver lets you shoot economical, gentle recoiling 5.7 x 28mm ammunition in your AR. The innovative, low profile 50 round magazine sold separately is positioned conveniently above the barrel for optimum weight distribution. Spent cases are ejected straight down through the magwell to avoid striking other shooters and for easy range cleanup. Simple, reliable blowback operation with a free sliding bolt that's the only moving part means there's no gas system to foul or clog with carbon. Ultra rigid, monolithic receiverhandguard rail is machined from a single block of aluminum, with nearly 3 feet of Picatinny rail space for mounting optics and other accessories. P Mfg 57 Center SPECS 25 63.5cm O.A.L. 4 lbs, 9 oz. 2.1kg weight. ReceiverHandguard 7075 T6 aluminum, hardcoat anodized, matte black. Barrel 4140 chrome moly steel, Parkerized, matte black. 16 40.4cm long, 1 8.5 twist. Magazine Molded polymer, translucent, smoke. 10frac3

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