AR9 Pistol Build Kit (7.5” Nitride Barrel & 7” M-Lok Handguard) w/ 80% Lower (1:10 Twist)

This AR-9 Pistol Build Kit is the key to gaining optimal supersonic 9mm velocity while retaining the shortest possible pistol configuration. With this kit, you can build a compact, lightweight 9mm AR pistol capable of accurately hitting medium-range targets.

Thanks to the included hybrid 9mm G-9 bolt carrier group, this pistol kit accepts both factory and aftermarket 9mm Glock magazines. Simply grab the optional AR-9 80% lower with your kit, and you’ll have all the parts you need to build your AR-9 pistol in one afternoon. 

AR-9 Pistol Build Kit Specs:

Barrel Length: 7.5″
Barrel Steel: 4150 CMV, heat-treated
Barrel Finish: Nitride
Muzzle Thread: 1/2×36
Chamber: 9mm Parabellum
Twist Rate: 1:10
Muzzle Device: A2 flash hider
Receiver Material: Forged 7075 T6
Receiver Type: Flat-top w/ Picatinny
Handguard Type: Custom, super-slim 7” M-Lok
Bolt Carrier Group Included: Yes
Bolt Steel: Shot-peened, MPI-tested, 8620 steel
Bolt Carrier Profile: 9mm Hybrid
Charging Handle Included: Yes

AR-9 Pistol Build Kit Features:

• Complete build kit w/ optional lower
• Includes pre-built 9mm AR upper
• Hybrid 9mm AR bolt carrier group
• High-quality CMV barrel for accuracy
• Compatible with Glock magazines
• Features enhanced, polished trigger
• Not considered a firearm, no FFL required
• Proudly built in the U.S.A.
• Backed by Lifetime Warranty

Barrel: Nitride-coated, 7”, chambered in 9mm Parabellum. Made of 4150 CMV steel. Heat-treated. Features 1:10 twist rate. Includes custom 7” ultra-slim M-Lok handguard, and A2 flash hider.

Upper: Mil-spec, made of forged 7075 T6 aluminum. Hard-coat anodized (Type III).

Bolt: Custom 9mm AR hybrid bolt carrier group. Compatible with any 9mm Glock magazines. Heat-treated. Nitride finish. 8620 steel.

80% Lower: Complete with optional AR-9 80% lower. Mil-spec fittings. Type III Hardcoat anodized finish.

Lower Parts Kit: Mil-spec 9mm AR lower parts kit. Enhanced, polished trigger (EPT). Six-position buffer tube. SB Tactical Pistol Brace. Carbine buffer spring. 9mm pistol buffer.

Charging handle: Standard AR-15 charging handle.

Please note: If completing your AR-9 build using the optional 80% lower, please select an AR-15-compatible 80% jig from our available options.