7.5” 300AAC BLACKOUT 1/8 PHOSPHATE PISTOL BUILD KIT
AR15 Pistol build kit includes complete upper receiver, bolt carrier group, charging handle, and complete lower parts kit; 80 percent lower not included.
*Not for sale to residents of the states of New York or New Jersey.
Out of stock
Note: your jurisdiction may require you to be a licensed FFL or licensed gunsmith to purchase this product.
Material | 4150V Chrome Moly Vanadium
Caliber | 300AAC Blackout
Twist | 1:8
Length | 7.5"
Gas System | Pistol
Finish | Phosphate
Thread | 5/8-24
Extension | M4
7075-T6 Forged Aluminum
Type III Hard Coat Anodizing
Assembled with Forward Assist and Dust Cover
M4 Feed Ramps
6" M-lok Rail
Bolt Carrier Group
Bolt is made of Mil-spec shot-peened Carpenter 158 steel. Gas key is secured with grade 8 fasteners and staked per mil-spec. Bolt carrier is parkerized outside, and chrome lined inside
Lower Parts Kit
Lower build kit with everything you need to assemble your AR-15 lower into a pistol. Features Enhanced Polished Trigger (EPT)
Safety Selector | Detent | Spring
Magazine Catch | Button | Spring
Bolt Catch | Buffer | Spring
Bolt Catch Buffer
Takedown | Pivot Pins | Springs  | Detents 
Buffer Retainer Pin | Spring
Magpul MOE Grip | Trigger guard
7075 mil-spec carbine receiver extension
Standard Carbine Buffer
Carbine Length Spring
The SBA3™ is 5-position adjustable, dramatically enhances versatility, and features a minimalist design with an integral, ambidextrous QD sling socket