PSA 18" RIFLE-LENGTH .223 WYLDE 1/7 STAINLESS STEEL 15" HEX M-LOK UPPER WITH MBUS SIGHT SET, BCG, & CH

Barrel Length: 18" Gas System: Rifle Length Barrel Profile: A2 Style Barrel Steel: 416R Barrel Finish: Stainless Steel 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" Hex Full Picatinny M-Lok Free Float Rail Bolt Carrier Group Included: Yes Bolt Steel: Carpenter 158 Bolt Carrier Profile: Full Auto Charging Handle Included: Yes Optics: Magpul MBUS Sight Set