AR15 Pistol build kit includes parts necessary to complete your 80 percent AR15 lower [Not Included].  11.5” 5.56 carbine gas upper features MLok 10.5” handguard and includes charging-handle, bolt carrier group, lower parts kit, and SBA3 pistol brace.

*Not for sale to residents of the states of New York or New Jersey.


1 in stock


Barrel Length | 11.5″

Barrel Profile | A2

Gas System | Carbine-Length

Barrel Steel | 4150V Chrome Moly Vanadium

Barrel Finish | Phosphate

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 | PSA A2 Flash Hider

Receiver Material | Forged 7075 T6 Aluminum

Receiver Type | M4

Handguard Type | 10.5″ Lightweight M-Lok Rail

Bolt Carrier Group Included:| Yes

Bolt Steel | Carpenter 158

Bolt Carrier Profile | Full-auto

Charging Handle Included | Yes

Build Kit | Mission First Tactical SBA3 Pistol Kit, Black

Barrel: 11.5″ 4150V Chrome Moly vanadium steel, phosphate coated and chambered in 5.56 NATO with a 1 in 7″ twist. Carbine-length gas barrel is finished off with a PSA Lightweight 10.5″ M-Lok rail, a low profile gas block, and a PSA A2 Flash Hider.

Upper: Forged 7075-T6 A3 AR upper is made to MIL-SPECS and hard coat anodized black for durability. Featuring a mil-spec finish, these uppers are made for us right here in the USA by a mil-spec manufacturer.

Bolt Carrier Group:  Bolt made of mil-spec shot-peened Carpenter 158 steel. Gas key is secured with grade 8 fasteners and staked per mil-spec.

Build Kit: A high quality lower build kit with everything you need to assemble your AR-15 lower into a pistol. Features a Mil-Spec Fire Control Group,  Mission First Tactical Engage V2 Grip, Mission First Tactical Enhanced Trigger Guard, and black oxide coated hammer and trigger springs. Also includes SB Tactical SBA3 Adjustable Pistol Brace, castle nut, latch plate, carbine buffer spring, 5 positioning mil-spec buffer tube, and standard carbine buffer.

Additional information

Weight 99.2 oz
Dimensions 32 × 8 × 4 in