PSA 10.5" Carbine-Length 5.56 NATO 1/7 Nitride 12" Lightweight Hex M-Lok Upper, No BCG or CH, 51655182778

Barrel Length: 10.5"

Barrel Profile: A2

Gas System: Carbine-length

Barrel Steel: 4150V Chrome Moly Vanadium

Barrel Finish: Nirtide

Chrome Lining: No

Muzzle Thread: 1/2-28

Chamber: 5.56 NATO 

Twist Rate: 1:7

Barrel Extension: M4

Diameter at Gas Block: .750

Gas Block Type: Low-profile

Muzzle Device: Palmetto State Armory Fluted Flash Can

Receiver Material: Forged 7075 T6

Receiver Type: M4

Hand guard Type: PSA 12" Hex Full Picatinny M-Lok Rail

Bolt Carrier Group Included: No

Bolt Steel: N/A

Bolt Carrier Profile: N/A

Charging Handle included: No

Overall Length: 21"