Get ready for an ultra-compact AR pistol build kit.
Upon completion of your build, this little guy will have you punching 9mm-sized holes in paper or clanging steel in no time. This kit starts with an upper assembly put together with a 4" nitride-coated barrel with a 4" M-Lok free floating handguard.
You also get the SB Tactical pistol brace to finish the back end of the pistol.
As a bonus, we threw in a lower parts kit with an upgraded trigger and a Magpul MOE pistol grip instead of the standard one.
Finally, you get our 9mm 80% lower receiver.
Please note this lower's mag well is cut to accept Glock mags only.
AR-9 Pistol Build Kit Specs:
Barrel Length: 4"
Barrel Steel: 4150 CMV, heat-treated
Barrel Finish: Nitride
Muzzle Thread: 1/2x36
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 4” 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, 4”, chambered in 9mm Parabellum. Made of 4150 CMV steel. Heat-treated. Features 1:10 twist rate. Includes custom 4” 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 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: Extended-latch 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.
AR-15Lowerreceivers.com only ships within the United States. Federal legislation dictates we cannot ship our products internationally. Shipping of various parts and/or accessories are prohibited to states and locales (ie New Jersey, California, New York, etc…) with restrictions against certain parts and/or accessories (i.e. states with high-capacity magazine restrictions, manufacturing of semi-automatic weapons, etc..). It is your responsibility to be aware of your local firearms laws before purchasing from our website. We try our best to keep our shipping page current, but laws change daily.