Handgun Kits

Handgun Kits

Quality 80% handgun kits for the 1911, Polymer80 GLOCK®, and Sig Sauer P320 platforms.

Whether you love customizing your weapons from the ground up or you're a first-time owner ready to exercise your Second Amendment rights, these 80 percent handgun kits provide all the parts and tools required for assembling a truly reliable, accurate pistol. Our handgun kits are designed by experienced arms makers and use only components made in the U.S. With a hand tool or two and a single afternoon, you can go from a box of parts in the garage to a new handgun at the range.

Available Handgun Makes & Models

These 80% kits are available for the following makes and models:

  • 1911 Government (.45, 9mm)
  • 1911 Commander (.45, 9mm)
  • Sig Sauer P320 Carry-Size
  • Sig Sauer P320 Full-Size
  • GLOCK® Series of handguns
    • PF940C is compatible with G19, G23, and G32
    • PF940v2 is compatible with G17, G22, G24, G31, G34, and G35
    • PF940SC is compatible with G26, G27

What's Included

Every gun kit differs in make and model, as do the included parts. Regardless, every kit comes with all parts required to construct a working handgun that's just as safe and reliable as its factory counterpart. All handgun parts are either OEM direct or factory-spec in their construction, material, fit, and finish:

  • 80% frame
  • Barrel
  • Slide
  • Grips (1911)
  • Rod or spring
  • Trigger parts kit
  • Frame parts kit
  • Slide parts kit
  • Magazine
  • Iron sights

Each kit includes the tools -- the finishing jig, bits, cutting tools or end mills, and instructions with measurements -- for fabricating the 80% frame (or 80% fire control unit for the P320). Completing the frame requires only basic hand tools, most often an electric drill, drill press, Dremel, vise, and files or sandpaper. Because each frame is different, the tool requirements are not universal but similar.

Are 80% Handguns Legal?

Yes. If you can legally own a gun in your state, you can legally build a firearm from scratch. Building a gun is allowed under federal law, and you don't need a license (FFL) nor any paperwork or a background check to build a gun. Some states have tried to eliminate this right. States like California require that you undergo a background check and serialize your handgun before you build it. Other states have banned 80% handguns and build kits altogether. Please read our Shipping & Return Policy to determine if we can ship to your state. Orders placed by residents in restricted states cannot be fulfilled and will be canceled, less any restocking fees.

Detailed Instructions & How-To's

Part of this build project will require you to cut and drill metal or polymer parts with power tools. No experience is required, and easy-to-follow instructions are provided for completing each handgun's frame. To get a better idea of what's involved for each platform, reference the instructional build guides below:

 Now get started! Your custom handgun build awaits.


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 www.glock.com.

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 80-lower.com, 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.