Discover the PSA 16" Mid-Length 5.56 NATO 1:7 Nitride Lightweight Hex M-LOK MOE EPT Rifle with MBUS Sight Set at Palmetto State Armory. This high-quality rifle features a 16" barrel, reliable nitride finish, and Hex full Picatinny M-LOK handguard for enhanced versatility and easy accessory attachment. Equipped with an MBUS sight set for improved accuracy. Shop now!Barrel: Chrome-moly vanadium steel barrel chambered in 5.56 NATO, with a 1:7 twist rate, M4 barrel extension, and a mid-length gas system. This A2 profile 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.Upper: Forged 7075-T6 A3 AR upper is machined to MIL-SPECS and hard coat anodized. Uppers include forward assist and dust cover. These uppers are made for us right here in the USA by a mil-spec manufacturer.Bolt Carrier Group: 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 an 8620 steel M-16 full-auto profile. Lower: These forged lowers are quality made using 7075-T6 aluminum and are marked "MULTI" for the caliber. The finish is hard-coat anodized. 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, and Enhanced Polished Trigger (EPT). Backup Sights: Magpul MBUS Front and Rear Sight, BlackPalmetto State Armory is your headquarters for buying AR-15 rifles Online.