PSA 18" MID-LENGTH 6.8 SPC II 1/11 STAINLESS STEEL 15" HEX M-LOK UPPER WITH BCG & CH

Barrel Length: 18" Gas System: Mid-length Barrel Profile: A2 Style Barrel Steel: 416R Barrel Finish: Stainless Steel Chrome Lining: None Muzzle Thread: 5/8x24 Chamber: 6.8 SPC II Twist Rate: 1/11 Barrel Extension: M4 Diameter at Gas Block: .750 Gas Block Type: Low profile adjustable gas block Muzzle Device: A2 Flash Hider Receiver Material: Forged 7075 T6 Receiver Type: M4 Handguard Type: PSA 15" Hex Full Picatinny M-Lok Free Float Rail Bolt Carrier Group Included: Yes Bolt Steel: 9310, Nitride Coated Bolt Carrier Profile: Full-auto Charging Handle Included: Yes Overall Length: 24.5"