Maximizing 9mm performance in the shortest possible AR pistol.
This is the ultimate kit for building the most compact AR-type pistol possible. It features a 5" 9mm AR upper with a bufferless conversion kit! Reduce the pistol's OAL to a size never before possible with the AR platform. This is the perfect AR-9 kit for a personal defense build.
Includes Bufferless End Plate
This kit includes a sealed end plate to cap the lower receiver, allowing the upper receiver to run bufferless. The end plate features a Picatinny rail for attaching a folding stock adapter (for SBR builds only) and covers any 9mm lower's buffer tube housing.
Other 9mm AR Kit Features
Also included is a 4" M-LOK rail, and M4 flat-top billet upper receiver. Equipped with a top-tier 9mm bolt carrier group and a flash hider, this upper also showcases the latest Gen 2 Side Charging handle for seamless operation. Designed to seamlessly integrate with mil-spec AR9 80% lowers and retail AR9 lowers, this upper offers unparalleled performance and compatibility.
AR-9 Upper Assembly Specs
Barrel
- Chamber: 9mm
- Contour: M4
- Length: 5”
- Twist Rate: 1:10
- Gas System: Blow-back
- Muzzle Threads: 1/2x36
- Feed Ramps: Single
- Material: 4150 CMV
- Finish: Parkerized
- Process: Button Rifled
- Lining: QPQ Nitride
- Extension: M4
- Muzzle: Spiral Flash Hider
Handguard
- Attachment System: 4" 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: A3 Flattop
- Material: Forged 7075-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, Side Charging
Lower Receiver Components Included
- Buffer System: 9mm
- Pistol Brace: Not included
- Parts Kit: 9mm w/ 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.
80-Lower.com only ships within the United States. Federal legislation dictates we cannot ship our products internationally.
- Caliber:
- 9mm
- Barrel Size:
- 5"
- Barrel Finish:
- Parkerized
- Twist Rate:
- 1/10
