Barrel Length: 18″ Gas System: Rifle-Length Barrel Profile: A2 Barrel Steel: 416R Stainless Steel Barrel Finish: Stainless Chrome Lining: None Muzzle Thread: 1/2-28 Chamber: .223 Wylde Twist Rate: 1:7 Barrel Extension: M4 Diameter at 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 Optics: Magpul MBUS Front and Rear Flip-Up Sights, Black Fire Control Group: PSA Enhanced Polished Trigger (EPT) FCG FEATURES Barrel: 18″ 416R stainless steel barrel, chambered in .223 Wylde, with a 1:7 twist, M4 barrel extension, and a rifle-length gas system. 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 feed ramp 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. Includes Charging Handle. Lower Build Kit: PSA MOE EPT Lower Build Kit, Black Includes: Magpul MBUS Sight Set, Black
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