PSA 16" M4 Carbine-Length 5.56 NATO 1:7 Nitride 15" Lightweight M-Lok Freedom Rifle Kit - $369.99

Description

Barrel Length: 16" 
Gas System: Carbine-Length
Barrel Profile: M4
Barrel Steel: 4150V Chrome Moly
Barrel Finish: Nitride
Chrome Lining: No
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
Muzzle Device: A2 Flash Hider
Receiver Material: Forged 7075 T6
Receiver Type: M4
Handguard Type: PSA 15" Lightweight M-Lok Free Float
Bolt Carrier Group Included: Yes
Bolt Steel: Carpenter 158
Bolt Carrier Profile: Full-auto
Charging Handle included: Yes
Overall Length: 24.5"
Features
Barrel: 4150V Chrome moly steel, chambered in 5.56 NATO, with a 1:7 twist, M4 barrel extension, nitride treated, and a carbine-length gas system. Barrel is finished off with a .750" diameter low-profile gas block, PSA 15" Lightweight M-Lok free float rail, and A2 flash hider.
Upper: Forged 7075-T6 A3 AR upper is hard coat anodized black for durability. Featuring M4 feedramp 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.
Lower Build Kit: Includes the PSA Classic Freedom Lower Build Kit
MPN#: 51655106915