PSA 18" 5.56 NATO 1:7 MIDLENGTH CHF HEAVY BARREL 15" M-LOK MOE EPT RIFLE KIT

PRODUCT DETAILS DETAILS Barrel Length: 18" Gas System: Midlength Barrel Profile: Heavy Barrel Steel: Cold Hammer Forged Steel Barrel Finish: Phosphate Chrome Lining: Yes Muzzle Thread: 1/2-28 Chamber: 5.56 NATO Twist Rate: 1:7 Barrel Extension: M4 Diameter Gas Block: .750 Gas Block Type: Low-profile Muzzle Device: A2 Flash Hider Receiver Material: Forged 7075 T6 Receiver Type: M4 Handguard Type: PSA 15" Lightweight M-Lok Rail Bolt Carrier Group Included: Yes Bolt Steel: Carpenter 158 Bolt Carrier Profile: Full-auto Charging Handle Included: Yes Fire Control Group: PSA Enhanced Polished Trigger (EPT) FCG FEATURES Barrel: A proprietary blend of Hammer forged chrome molly vanadium made by FN that is referred to as "Machine Gun Steel" by virtue of its required use in FN's M249 and M240 weapons. The hammer forging process work hardens the steel, making it more durable. In addition, the chrome process for the bore allows for a lining almost twice as thick as a standard M16 for enhanced durability. Chambered in 5.56 NATO, with a 1:7 twist, M4 barrel extension, and a mid-length gas system. This Heavy profile barrel is Mil-spec phosphate coated, High Pressure tested and Magnetic Particle inspected. The barrel is finished with a .750" diameter low-profile gas block, PSA 15" Lightweight M-Lok Free Float Rail, and an A2 flash hider. Upper: Forged 7075-T6 A3 AR upper is hard coat anodized black for durability. Featuring M4 feedramp cuts, these upper receivers are made for us right here in the USA. Bolt Carrier Group: For AR15 and M16 rifles and carbines. Bolt is made of shot-peened, Mil-spec Carpenter 158® steel. Gas key is secured with grade 8 fasteners and staked. Bolt carrier is parkerized outside and chrome lined inside. Includes Charging Handle. Lower Build Kit: PSA MOE EPT Lower Build Kit, Black