PSA 11.5" 5.56 NATO 1/7 NITRIDE 10.5" LIGHTWEIGHT HEX M-LOK MOE EPT SBA3 PISTOL KIT

Barrel Length: 11.5" Gas System: Carbine-length Barrel Profile: A2 Style Barrel Steel: 4150V Chrome Moly Vanadium Barrel Finish: Nitride Chrome Lining: None Muzzle Thread: 1/2-28 Chamber: 5.56 NATO Twist Rate: 1 in 7" Barrel Extension: M4 Diameter at Gas Block: .750" Gas Block Type: Low Profile Gas Block Muzzle Device: A2 Style Receiver Material: Forged 7075 T6 Receiver Type: M4 Hand guard Type: PSA 10.5" Lightweight Hex Full Picatinny M-Lok Rail Bolt Carrier Group Included: Yes Bolt Steel: Carpenter 158 Bolt Carrier Profile: Full-auto Charging Handle Included: Yes Build Kit: PSA MOE EPT SBA3 Lower Build Kit, Black