Description
A ready-to-build AR9, made for maximum accuracy.
The AR9 is a versatile platform, capable of sending 9mm rounds at distances far beyond the typical pistol — if you configure it correctly. So, that’s what we’ve done with this kit: A 4150 CMV-forged, 10.5″ barrel ensures maximum muzzle velocity and accuracy with all 9mm loads, while a tuned 9mm buffer and side-charging provide reliable operation with improved ergonomics and recoil control.
Paired with a free-float, M-LOK handguard featuring top-mounted Picatinny rails for optics and iron sights, and a custom billet M4 flattop upper, this 9mm AR-15 kit includes everything you need — minus the lower receiver — to build an accurate, compact shooter.
Barrel
- Chamber: 9mm
- Contour: M4/Government
- Length: 10.5″
- Twist Rate: 1:10
- Gas System: Blowback
- Muzzle Threads: 1/2 x 36
- Material: 4150 CMV
- Finish: Parkerized
- Process: Button Rifled
- Lining: None
- Feed Ramp: 9mm
- Muzzle: “Twisted” Flash Hider
Handguard
- Attachment System: M-LOK
- Handguard Length: 9.5″
- Finish: Type III Hardcoat Anodized (Mil-Spec)
- Top Rail: M1913 Picatinny
- Material: Billet 6061-T6 Aluminum
- Attachment: Barrel Nut
Upper Receiver
- Profile: M4 Flattop Right-Side Charger
- Material: Billet 6061-T6 Aluminum
- Finish: Type III Hardcoat Anodized (Mil-Spec)
Bolt Carrier Group
- Profile: M16/Full-Auto
- Steel: AISI E9310
- Exterior: Black Nitride
- Interior: Black Nitride
- Gas Key: N/A
- Charging Handle: Included, Right-Side Charging
Lower Receiver Parts
- Buffer System: 9mm
- Pistol Brace: SBA3 5-Position
- Parts Kit: 9mm, Single-Stage Trigger
Lower receiver not included. Requires AR9 lower, or AR-15 lower with 9mm conversion block.
WARNING: Handling firearms parts and accessories can expose you to lead and other petroleum products known to the State of California to cause cancer and reproductive harm. For more information go to: www.P65Warnings.ca.gov
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 or “assault weapons” (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 or machining a firearm. We try our best to keep our shipping page current, but laws change daily.
80-Lower.com only ships within the United States. Federal legislation dictates we cannot ship our products internationally.
- Platform:
- AR9
- Caliber:
- 9mm
- Barrel Size:
- 10.5″
- Barrel Finish:
- Parkerized
- Twist Rate:
- 1/10
