AR9 80 Lower

AR9 80 Lower

Our billet AR9 80% lower receiver is proudly U.S.A-made and precisely CNC machined from the highest quality 6061-T6 aluminum to ensure it confidently withstands the higher pressures of the 9mm's block-back function. This receiver is designed to allow for easy assembly of an AR-style pistol-caliber carbine (PCC) using most standard AR-15 components. This AR9 receiver blank is compatible with all standard AR-15 jigs, drill bits, and end mill bits. If you've already built an AR-15 from an 80% lower using a jig, you've already got the tools to finish the job!

Works with Factory, Aftermarket Glock Magazines

Most AR9s and PCCs function with either Glock or Colt magazines. We chose Glock compatibility for their magazines' availability, quality, and generally low prices. No custom components or fitment is required. The magazine well is designed specifically for all factory and aftermarket Glock mags, and the magazine release and ejector both come installed for easier assembly.

Finish Your Lower with AR-15 Components

The convenience of this lower is it's compatibility with standard, mil-spec AR-15 components. This AR9 lower works with a regular AR-15 lower parts kit and trigger, mil-spec buffer tube and recoil spring, and conventional pistol grip and takedown pins. It's designed to interface with a standard stripped AR-15 upper receiver and takedown pins, too, requiring nothing more than a 9mm barrel. Pair with any AR9 pre-built upper receiver assembly or make it easy and buy a complete AR9 Build Kit with 80% lower, upper, buffer, pistol brace, and parts kit included!

Bolt Carrier Group: To complete your build, we recommend selecting an AR9 upper assembly or build kit that utilizes the PSA G-9 Hybrid Bolt Carrier Group (compatible with stripped AR-15 uppers, Glock magazines, and our AR9 lower). All our AR9 build kits include the G-9 BCG and appropriate upper assembly. If you opt for another type of 9mm upper, ensure you select a BCG that is ramped on the underside. 


  • Caliber: 9x19mm Parabellum
  • Construction: 6061 T6 Billet Aluminum
  • Buffer Fitment: Mil-spec (1.146")
  • Finish: Type III Hardcoat Anodized
  • Gas System: (None) Blow-back

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