Run your 9mm AR rifle bufferless!
A 16" barrel makes for a long rifle -- but that doesn't have to be a problem with this unique AR-9 rifle kit. Included with the barreled upper assembly is a bolt-on bufferless conversion kit. Thanks to 9mm's blowback operation, no gas system is required, allowing you to ditch the usual buffer tube assembly.
Bufferless Conversion
This upper instead operates using a guide rod and spring inside the receiver itself, where the gas tube and bolt's gas key would normally rest, capped off with a bolt-on endplate. The endplate features a standard Picatinny rail, allowing you to install any folding stock!
What’s Included
This kit is not a firearm. It includes an upper receiver group, bolt carrier group, and lower parts kit.
AR-9 Rifle Kit Specifications
Barrel
- Chamber: 9mm
- Contour: M4
- Length: 16”
- Twist Rate: 1:10
- Gas System: Blow-back
- Muzzle Threads: 1/2x36
- Feed Ramps: Single
- Material: 4150 CMV
- Finish: Parkerization
- Process: Button Rifled
- Lining: QPQ Nitride
- Extension: M4
- Muzzle: Spiral Flash Hider
Handguard
- Attachment System: 15" M-Lok
- Finish: Type III Hardcoat Anodized (Mil-Spec)
- Top Rail: Split Rail / 1913 / Picatinny Rail
- Material: 6061-T6 Billet Aluminum
- Attachment: Barrel Nut
Upper Receiver
- Profile: Flattop w/ Left Side Charging Port
- Material: Billet 6061-T6 Aluminum
- Finish: Type III Hardcoat Anodized (Mil-Spec)
Bolt Carrier Group
- Profile: 9mm / Blow-back
- Steel: 9310 Tool, HPT/MPI-tested
- Exterior: Black Nitride
- Interior: Parkerized
- Gas Key: 9mm Blow-back
- Charging Handle: Included, Left-Side Charging
Lower Receiver Parts
- Buffer System: 9mm (bufferless components included w/ upper)
- Buttstock: Not included
- Parts Kit: Mil-spec, single-stage trigger
Lower receiver not included.
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.
GunBuilders.com only ships within the United States. Federal legislation dictates we cannot ship our products internationally.