4″ 9MM AR-9 PISTOL BUILD KIT Gen4
AR-9 pistol build kit includes parts necessary to complete your AR-9 80% lower receiver [not included].
Out of stock
Note: your jurisdiction may require you to be a licensed FFL or licensed gunsmith to purchase this product.
Material | 4150 CMV
Caliber | 9mm
Twist | 1:10
Length | 4"
Finish | Nitride
Thread | 1/2-36
Extension | 9mm, Blowback
6061 Billet T6 Aluminum
Type III Hard Coat Anodizing
5" Lightweight M-lok Rail
Bolt Carrier Group
Gen 4 Hybrid 9mm BCG
8620, Nitride / Heat Treated
Lower Parts Kit
Lower build kit with everything you need to assemble your AR-9 lower into a pistol.
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 | Magpul Trigger guard
SB Tactical SBA3 Adjustable Pistol Brace