AR9 Pistol Kit

AR9 Pistol Kit

The new AR9 platform is a dedicated 9mm PCC (pistol-caliber carbine) and pistol configuration that ditches those sloppy barrel and "box magazine" conversions. We partnered closely with top gunsmiths and OEM manufacturers to bring you these wickedly priced, high-performance AR9 Pistol Kits. Available in various barrel lengths, handguard types, and configurations, there's an affordable AR9 kit for you waiting just above. 

Why Our AR-9 Pistol Kits?

When you purchase an AR-type "build kit" from a gun store or other online retailer who's an FFL, you're really just buying a disassembled rifle or pistol. You're still paying the extra taxes, fees, and higher prices associated with purchasing a retail firearm. But our kits ditch all that in favor of the new AR9 80% lower! This lower is not legally considered a firearm by the ATF or federal law, and we pass those savings on to you. That also means your AR9 kit ships directly to your front door -- minus the taxes, fees, paperwork, and FFL transfer. In addition to cost savings and convenience, our kits boast some of the highest-grade barrels, treatments, and parts available:

Why our AR9 Kits are tier-one in fit and finish:

  • All barrels are forged from MIL-B-11595 E steel (4150 or Chromoly Vanadium)
  • All stainless barrels forged from Crucible 416R steel, offering sub-MOA accuracy
  • All BCGs are M16 in profile with chrome lining and properly staked gas keys
  • All stripped upper receivers forged from mil-spec 7075 T6 aluminum
  • All buffer assemblies and lower parts kits are mil-spec in fit and finish
  • All barreled uppers are test-fired to ensure proper assembly

Completing Your 80% Lower and Pistol

Your AR9 kit ships with all the parts you need to assemble your pistol into a working, fully functional, MOA-capable shooter. To fabricate the optional 80% lower, you'll need the AR9 80% jig. The jig provides the cutting and drilling instructions and guides you along each fabrication step. Total machining time takes around two hours or less for first-time builders, no experience required. The jig also includes the necessary drill bits and end mill bit to complete the receiver. 

Click here to see a visual guide detailing how to cut and drill the 80% lower.

NOTE: The AR9 80% lower is designed to use factory and aftermarket Glock magazines, with the appropriate ejector already installed. To make it even more convenient, the lower is designed to work with a mil-spec AR-15 lower parts kit and buffer assembly. That means any standard AR-15 or AR9 jig will work when completing the receiver!

Pistol Brace Included!

The ATF recently clarified that pistol braces are completely legal on your AR9 pistol. To see the ATF's most recent determination letter, read our pistol brace guide here.

State Laws May Vary

Contrary to federal law, some states have either restricted or banned the sale, transfer, and ownership of 80% lowers, firearm blanks, and other gun parts. Because of these restrictions, we cannot ship our products to certain states. Please confirm whether your state is restricted on our Shipping & Return Policy before placing an order. We cannot fulfill orders to restricted states if placed.


DISCLAIMER: “GLOCK” is a federally registered trademark of GLOCK, Inc. and is one of many trademarks owned by GLOCK, Inc. and GLOCK Ges.m.b.H. Neither 80 Percent Lowers, a/k/a Tactical Gear Heads, LLC nor this site are affiliated in any manner with, or otherwise endorsed by, GLOCK, Inc. or GLOCK Ges.m.b.H. The use of “GLOCK” on this page is merely to advertise the sale of GLOCK pistols, parts, or components. For additional genuine GLOCK, Inc. and GLOCK Ges.m.b.H products and parts visit

DISCLAIMER: If you are new to the world of DIY gun building, you likely have a lot of questions and rightfully so. It’s an area that has a lot of questions that, without the correct answers, could have some serious implications. At, we are by no means providing this content on our website to serve as legal advice or legal counsel. We encourage each and every builder to perform their own research around their respective State laws as well as educating themselves on the Federal laws. When performing your own research, please be sure that you are getting your information from a reliable source.

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We are a national retailer of individual components and not all products depicted on this website are legal in every state. Shipping of various products found on this website are prohibited to some states (such as California, Connecticut, District of Columbia, New Jersey, New York, Rhode Island, and Washington). The information, pictures, text or products presented on this website are not a representation by us, and should not be understood by you, that any product or completed firearm is legal to assemble or own in your state of residence. We encourage each and every builder to perform their own research about the state and federal laws that apply to them. It is your responsibility to understand the law and we encourage you to consult with an attorney or your local ATF representative.