<p>The Palmetto State Armory Custom Series 5.56 NATO Carbine-Length 16" Nitride 13.5" LW-M-Lok Rail gives you a tried and true platform with a PSA Custom Series MLOK compatible handguard and a custom finish that is sure to draw attention.</p> <p><strong>Barrel</strong>: 16" Chrome-moly vanadium steel barrel Chambered in 5.56 NATO with a 1/7 twist. The barrel is Nitride treated for durability and finished off with a PSA Custom 13.5" LW-M-Lok Rail and a birdcage style A2 flash hider.</p> <p><strong>Upper</strong>: Billet 6061-T6 AR upper is Teflon-Coated for durability. These upper receivers are made for us right here in the USA.</p> <p><strong>Bolt Carrier Group</strong>: PSA Custom DLC treated 8620 steel bolt, with an enhanced firing pin and external 5.56 style extractor. The bolt carrier group is compatible with most aftermarket fire control groups.</p> <p><strong>Lower</strong>: These forged lowers are quality made using 7075-T6 aluminum and are marked "MULTI" for the caliber. The finish is Teflon-coated. The Mil-spec diameter 7075-T6 buffer tube is hard-coat anodized with 6 adjustment positions and is fitted with a MOE Carbine Stock, Magpul grip, PSA Custom Short/Long Throw Ambi-Safety, and PSA Custom 3.5 lb Flat Bow FCG.</p> <p><strong>The PSA Custom Series gives unmatched quality and in-house customization at prices that other manufacturers can't compete with proving you don't have to pay top-dollar for top-shelf quality!!</strong></p>