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Handgun Parts

9 of 9 Items
  • Sale
    Complete RMR Slide Assembly for Glock® 21 Complete RMR Slide Assembly for Glock® 21 Complete RMR Slide Assembly for Glock® 21 Complete RMR Slide Assembly for Glock® 21 Complete RMR Slide Assembly for Glock® 21

    Complete RMR Slide Assembly for Glock® 21

    Complete your GLOCK® 21 compatible PF45 frame (or upgrade your Gen 3 pistol) with this red dot-ready slide assembly. Its cut with the popular RMR footprint, and features front and rear serrations with a simple but rugged matte black finish. It's also...

    Was: $269.99
    Now: $234.99
  • Sale
    Glock® 21 Compatible Upper Parts Kit

    Glock® 21 Compatible Upper Parts Kit

    Building a custom G21 or PF45 slide? You need this slide parts kit. Ready to build a custom GLOCK® slide for your Gen 3 pistol or Polymer80 build? You need to pair it with a parts kit like this one. We've got your PF45 build (or factory GLOCK®...

    Was: $104.99
    Now: $89.99
  • Sale
    Glock® 21 Compatible RMR Cut Bull Nose Slide - .45acp 5 Glock® 21 Compatible RMR Cut Bull Nose Slide - .45acp 6 Glock® 21 Compatible RMR Cut Bull Nose Slide - .45acp Glock® 21 Compatible RMR Cut Bull Nose Slide - .45acp 2 Glock® 21 Compatible RMR Cut Bull Nose Slide - .45acp 3

    Glock® 21 Compatible RMR Cut Bull Nose Slide - .45 ACP

    Gen 3 compatible. RMR optic cut. Improved serrations and machining. This GLOCK® 21-compatible slide features a slick bullnose profile with improved, multi-directional front and rear serrations providing improved grip. This slide's also cut from 416R...

    Was: $179.99
    Now: $169.99
  • 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
  • Government Model 5" FS - .45ACP Parkerized Government Model 5" FS - .45ACP Parkerized 2 Government Model 5" FS - .45ACP Parkerized 3 Government Model 5" FS - .45ACP Parkerized 4 Government Model 5" FS - .45ACP Parkerized 5

    Full-Sized 5" 1911 Barrel - .45ACP

    MOA accuracy for your classic .45 (without breaking the bank). This classic Parkerized 5" 1911 barrel provides the perfect solution for an affordable, quality, accurate barrel. It includes all the fixtures needed to drop in and run, without added...

    $64.99
  • Glock® 21 Compatible RMR Cut Slide - .45acp 5 Glock® 21 Compatible RMR Cut Slide - .45acp 6 Glock® 21 Compatible RMR Cut Slide - .45acp Glock® 21 Compatible RMR Cut Slide - .45acp 2 Glock® 21 Compatible RMR Cut Slide - .45acp 3

    Glock® 21 Compatible RMR Cut Slide - .45 ACP

    Gen 3 compatible. RMR optic cut. Rear angled serrations. This GLOCK® 21-compatible slide features a pre-cut RMR optic footprint and angled rear serrations for improved grip. Cut from 416R stainless, heat-treated and coated in a matte black powdercoat...

    $169.99
  • Sale
    Full-Sized 5" 1911 Slide - .45acp - Matte Nickel 5 Full-Sized 5" 1911 Slide - .45acp - Matte Nickel 6 Full-Sized 5" 1911 Slide - .45acp - Matte Nickel Full-Sized 5" 1911 Slide - .45acp - Matte Nickel 2 Full-Sized 5" 1911 Slide - .45acp - Matte Nickel 3

    Full-Sized 5" 1911 Slide - .45acp - Matte Nickel

    The RIA matte nickel slide: A bit of bling, tons of protection. Rock Island Armory's matte nickel 5" 1911 slide perfectly balances good looks with insane durability. This nickel-plated slide provides a bit of flash, plus the added benefit of a completely...

    Was: $159.99
    Now: $139.99
  • Full-size 5" 1911 45 ACP Slide 5 Full-size 5" 1911 45 ACP Slide 6 Full-size 5" 1911 45 ACP Slide Full-size 5" 1911 45 ACP Slide 2 Full-size 5" 1911 45 ACP Slide 3

    Full-Sized 5" 1911 Slide - .45acp

    Upgrade your .45 1911 with a fiber optic-equipped slide. The classic 1911 slide provides adequate sights. But upgrading to fiber optic irons with a more easily adjustable rear sight can seriously improve your groupings and sight picture. That's what this...

    $159.99
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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.