PSA 16" Carbine-Length M4 5.56 NATO 1/7 Nitride MOE EPT Rifle & Rear MBUS

PSA 16" Carbine-Length M4 5.56 NATO 1/7 Nitride MOE EPT Rifle & Rear MBUS Barrel Length: 16"Gas System: Carbine-LengthBarrel Profile: M4Barrel Steel: 4150V Chrome MolyBarrel Finish: NitrideMuzzle Thread: 1/2-28Chamber: 5.56 NATOTwist Rate: 1 in 7"Barrel Extension: M4Diameter at Gas Block: .750"Gas Block Type: F-marked Front Sight BaseMuzzle Device: A2 Flash HiderReceiver Material: Forged 7075 T6Receiver Type: M4Hand guard Type: Magpul MOE Black HandgaurdsBolt Carrier Group Included: YesBolt Steel: Carpenter 158Bolt Carrier Profile: Full AutoCharging Handle included: YesRear Sight: Magpul MBUS Rear Flip-Up SightOverall Length: 24.5"Barrel: Nitride finished 4150V chrome moly vanadium 16" barrel. Chambered in 5.56 NATO, with a 1:7 twist, M4 barrel extension, and a carbine-length gas system. this M4 barrel is is finished off with Magpul MOE carbine-length handguards, F-Marked gas sight base, and A2 flash hider.Upper: Forged 7075-T6 A3 AR upper is made to MIL-SPECS and hard coat anodized for durability. These uppers are made for us right here in the USA by a mil-spec manufacturer.Bolt: Full-auto profile bolt carrier group. Milspec Carpenter No. 158® steel bolt, Shot Peened, High pressure tested, Mag particle inspected,  Gas Key Hardened to USGI Specifications, Fastened with Grade 8 screws, and Staked Per Mil-Spec.  8620 steel M-16 profile carrier is chrome lined and phosphate coated.Includes: Magpul MOE Stock,  Pistol grip, and trigger guard, Palmetto State Armory EPT  Lower Parts Kit and Mil-Spec diameter 6-position buffer tube assembly. Magpul® MBUS Rear Sight, BlackEPT Lower parts kit upgrades the standard combat-style fire control group with a single-stage, target-style,  fire control group with polished contact surfaces and a electroless nickel coating.________________________________These forged lowers are quality made using material is 7075-T6 and are marked "CAL MULTI" to accommodate most builds.  Finish is Black Hardcoat Anodize per MIL-8625 Type 3 class 2.