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Handgun Parts

  • Glock® 19 Compatible Lower Parts Kit

    Glock® 19 Compatible Lower Parts Kit

    So you wanna build a 3rd gen Glock® 19 compatible compact-sized pistol. You got your Glock® 19 compatible 3rd gen compact frame, and now you need the guts to put in it to make it work. No need to scour every corner of the internet to Frankenstein...

    $41.99
  • Glock® 17 Compatible Lower Parts Kit

    Glock® 17 Compatible Lower Parts Kit

    So you wanna build a 3rd gen Glock® 17 compatible full-sized pistol. You got your Glock® 17 compatible 3rd gen full-sized frame, and now you need the guts to put in it to make it work. No need to scour every corner of the internet to Frankenstein...

    $44.99
  • Glock® Compatible 19 Gen 4 Lower Parts Kit

    Glock® Compatible 19 Gen 4 Lower Parts Kit

    We take stock Glock® compatible 19 pistols and mod and customize the hell out of them. In the same way the AR-15 is the most customizable rifle in the world, the Glock® compatible pistol is the most customizable handgun. But the vast majority of...

    $89.99
  • Magpul PMAG G19 15rd Magazine Magpul PMAG G19 15rd Magazine 2

    Magpul® PMAG G19 15rd Magazine

    The PMAG G19 15rd magazine is just one of many of Magpul's line forward-thinking firearm accessories. This 9mm magazine is made from polymer, so it is tough enough to take a beating while still being one of the lightest mags in the market, and also...

    $14.20
  • Magpul PMAG G17 17rd Magazine - MAG546-BLK Magpul PMAG G17 17rd Magazine - MAG546-BLK 2

    Magpul® PMAG G17 17rd Magazine

    The Magpul PMAG 17rd magazine is a surprisingly high quality magazine that can easily outperform those in higher price points. Being made from polymer, this magazine is lightweight and incredibly durable with a 17th round witness hole to check for a full...

    $14.20
  • Glock® 43 Compatible Lower Parts Kit

    Glock® 43 Compatible Lower Parts Kit

    If you're building a Glock® 43 compatible pistol, you're awesome, but you'll need a lower parts kit for it. We've got you. This Glock® 43 compatible lower parts kit is brought to you by KM Tactical. It includes everything you need to turn that...

    $59.99
  • Glock® 19 Compatible Upper Parts Kit

    Glock® 19 Compatible Upper Parts Kit

    If you're going the 80% route and building yourself a gen 3 Glock® 19 compatible pistol, then you need an upper parts kit to match. So let us help you out. This Glock® 19 Compatible Upper Parts Kit is exactly what you need. It includes all the...

    $54.99
  • Glock® 17 Compatible Upper Parts Kit

    Glock® 17 Compatible Upper Parts Kit

    If you're going the 80% route and building yourself a gen 3 Glock® 17 compatible pistol, then you need an upper parts kit to match. So let us help you out. This Glock® 17 Compatible Upper Parts Kit is exactly what you need. It includes all the...

    $59.99
  • Glock® 19 Compatible Slide w/ Rear Serration 4 Glock® 19 Compatible Slide w/ Rear Serration 1 Glock® 19 Compatible Slide w/ Rear Serration 2 Glock® 19 Compatible Slide w/ Rear Serration 3

    Glock® 19 Compatible Slide w/ Rear Serration

    Finish your GLOCK® 19-compatible P80 build, or upgrade your current Gen 1 to 3 GLOCK® pistol! It functions as reliably as an OEM slide, because it meets OEM specs. This slide features an ultra-hard tungsten carbide finish. This incredibly tough,...

    $169.99
  • Glock® 17 & 19 Compatible RMR Cover Plate - Black Glock® 17 & 19 Compatible RMR Cover Plate - Black 2

    Glock® 17 & 19 Compatible RMR Cover Plate - Black

    This RMR Cover Plate fits all OEM and aftermarket GLOCK® 17, G19, and Polymer80-equivalent slides that feature a Trijicon RMR optic cut. The screw holes line up with the holes drilled for your slide's optic. Cover Plate Features 100% Made and coated...

    $16.99
  • Glock® 26 Compatible Lower Parts Kit

    Glock® 26 Compatible Lower Parts Kit

    So you got your frame, slide, and sights picked out, all based on your preference. Now you need the parts that'll bring life to your 3rd Gen pistol, and we've got you covered... well for the bottom half at least, with this GLOCK® 26 Compatible Lower...

    $49.99
  • Glock® 19 Compatible Threaded Barrel - Black

    Glock® 19 Compatible Threaded Barrel - Black

    Got the urge to enhance the performance of your Glock® 19 compatible build even further by using a threaded barrel, so you can screw on a muzzle device? Or perhaps you've got a can picked out or are planning to "DIY" a solvent trap? First off, we're...

    $79.99
  • Glock® Compatible Barrel Thread Protector - 9mm

    Glock® Compatible Barrel Thread Protector - 9mm

    Having a threaded barrel on your 9mm Glock® compatible pistol doesn't mean you have to have a muzzle device or suppressor attached at all times. Sometimes, for storage or EDC, or whatever the case may be, you find a reason to take the attachment off...

    $19.99
  • Glock® 17 Compatible Threaded Barrel - Black

    Glock® 17 Compatible Threaded Barrel - Black

    Got the urge to enhance the performance of your Glock® 17 compatible build even further by using a threaded barrel, so you can screw on a muzzle device? Or perhaps you've got a can picked out or are planning to "DIY" a solvent trap? First off, we're...

    $69.99
  • Glock® 21 Compatible Lower Parts Kit

    Glock® 21 Compatible Lower Parts Kit

    Ready to assemble your PF45 or G21 frame? Grab this kit. This Gen 3 GLOCK® compatible lower parts kit is specifically designed for G21 pistols and Polymer80 PF45 frames. It features OEM-spec components to ensure reliability and an easy installation...

    $74.99
  • Glock® Compatible HD Fiber Optic Sight Set 1 Glock® Compatible HD Fiber Optic Sight Set 2 Glock® Compatible HD Fiber Optic Sight Set 3 Glock® Compatible HD Fiber Optic Sight Set 4 Glock® Compatible HD Fiber Optic Sight Set 5

    Glock® Compatible HD Fiber Optic Sight Set

    Bright HD fiber optics for your GLOCK® slide. This HD Sight kit's front iron sight provides a crisp, bright red glow, even in low-light conditions. The rear sight features a simple but effective open leaf with subtle knurling to reduce even faint...

    $44.99
  • Glock® 17 & 19 Compatible RMR Cover Plate - FDE Glock® 17 & 19 Compatible RMR Cover Plate - FDE

    Glock® 17 & 19 Compatible RMR Cover Plate - FDE

    This RMR Cover Plate fits all OEM and aftermarket GLOCK® 17, G19, and Polymer80-equivalent slides that feature a Trijicon RMR optic cut. The screw holes line up with the holes drilled for your slide's optic. Cover Plate Features 100% Made and...

    $16.99
  • LANTAC SSR-3.5˜Super Short Reset 3.5 lb Connector

    LANTAC SSR-3.5 lb Super Short Reset 3.5 lb Connector

    Out of the box, some people don't like the feel of the factory trigger pull on their new Glock®. But not to worry, fixing an undesireable trigger pull is one of the easiest jobs you can do to the internal components. Even easier, if you're building...

    $15.99
  • Glock® Compatible Competition Spring Kit

    Glock® Compatible Competition Spring Kit

    What do you mean you're not exactly like me as a gen 1-4 Glock® compatible shooter?! What do you mean your performance preferences aren't exactly like mine?! Well, I guess you'll just have to customize the hell out of your gen 1-4 Glock®...

    $14.99
  • Glock® OEM Adjustable Rear Sight Glock® OEM Adjustable Rear Sight 2 Glock® OEM Adjustable Rear Sight 3

    Glock® OEM Adjustable Rear Sight

    GLOCK's® adjustable factory rear sight. Includes adjustment tool. Dialing in your finished Polymer80 or factory GLOCK® is now easier, thanks to the OEM adjustable rear sight. With bright white target lines and an easy-to-adjust set screw, the...

    $22.99
  • Glock® Compatible 6.0 lb Trigger Spring – Gen 1-4

    Glock® Compatible 6.0 lb Trigger Spring - Gen 1-4

    You've decided your gen 1-4 double-stack Glock® Compatible pistol's trigger performs well enough; you just wish it was a touch smoother and maybe a tiny bit lighter. Good, we can help you out with the Glock® Compatible 6.0 lb Trigger Spring for...

    $3.99
  • Glock® 43 Compatible Black Slide 4 Glock® 43 Compatible Black Slide 1 Glock® 43 Compatible Black Slide 2 Glock® 43 Compatible Black Slide 3

    Glock® 43 Compatible Black Slide

    Gen 3 compatible. OEM specs, style, and fitment. This GLOCK® 43/43X-compatible slide features OEM specifications and a factory-equivalent fit and finish, making it an ideal replacement or upgrade for your G43, G43X or Polymer80 build. This slide's...

    $139.99

Quality 80% handgun parts 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 parts kits provide most tools required for assembling a completed 80% pistol frame (sold separately, fabrication required) into a truly reliable, accurate pistol. These handgun parts are designed by experienced arms makers and use only components made in the U.S.

Available Handgun Parts & Frames

These 80% parts 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

Pistol Parts Kits: What's Included

Our pistol parts kits include all the components required to assemble your fabricated 80% frame, minus a magazine. Of course, customizing a pistol from scratch is one reason why many owners choose to build their pistols in the first place. Check out our custom GLOCK slides, frame parts kits, and upgraded barrels.

State Laws Vary

Some states have restricted handgun parts and kits, like those available here. 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.

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


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.

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, Hawaii, 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.