<p><strong>Barrel</strong>: Chrome-moly vanadium steel barrel chambered in 5.56 NATO, with a 1:7 twist rate, M4 barrel extension, and a mid-length&nbsp;gas system. This A2 profile nitride barrel is finished off with a PSA 13.5" Hex Full Picatinny M-Lok Free Float Rail, low-profile gas block, and A2 flash hider.</p>
<p><strong>Upper</strong>: Forged 7075-T6 A3 AR upper is machined to MIL-SPECS and hard coat anodized.&nbsp; Uppers include forward assist and dust cover.&nbsp; These uppers are made for us right here in the USA by a mil-spec manufacturer.</p>
<p><strong>Bolt Carrier Group</strong>: Full-auto profile bolt carrier group. Shot-peened, mil-spec Carpenter 158 steel bolt. Gas Key Hardened to USGI Specifications, fastened with Grade 8 screws, and Staked Per Mil-Spec. The carrier is 8620 steel M-16 full-auto profile.&nbsp;</p>
Save on PSA 16" Mid-Length 5.56 NATO 1:7 Nitride 13.5" Hex M-Lok Upper With BCG & CH with a Palmetto State Armory coupon