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  • Sale! GlockĀ® Compatible Non-Adjustable Pyramid Trigger - Black

    GlockĀ® Compatible Non-Adjustable Pyramid Trigger – Black

    Original price was: $199.99.Current price is: $92.99.

    The Glock® compatible pistol fits into the category of “most customizable pistols ever.” You can upgrade, replace, or otherwise swap out every single part. But before you fix yours up to truly make it your own, start with an upgrade that makes sense, and more importantly, will eventually make you a better shooter. This is…

  • Sale! GlockĀ® Compatible Pyramid Trigger for G42/43/43X/48 - Black

    GlockĀ® Compatible Pyramid Trigger for G42/43/43X/48 – Black

    Original price was: $189.99.Current price is: $129.97.

    The Glock® 43-type pistol, despite still being relatively new, fits into the category of “most customizable pistols ever.” You can upgrade, replace, or otherwise swap out every single part. But before you fix yours up to truly make it your own, start with an upgrade that makes sense, and more importantly, will eventually make you…

  • Sale! LWD GlockĀ® Compatible Connector - 3.5 lb G42/43

    LWD GlockĀ® Compatible Connector – 3.5 lb G42/43

    Original price was: $22.95.Current price is: $17.97.

    For those of you doing a single-stack Glock® 42 or 43 compatible pistol build project who have decided to opt for a better-than-stock trigger pull, this is your first step. This is the LWD Glock® Compatible 3.5 lb Connector for your 42 and 43 sized models. This connector will immediately reduce the pull weight of…

  • Sale! GlockĀ® 17 Compatible Barrel - TiN

    GlockĀ® 17 Compatible Barrel – TiN

    Original price was: $109.99.Current price is: $79.97.

    Make your Glock® 17 or compatible build look like it was forged in the fires of the ancient Greek Mount Olympus by Hephaestus himself by adding a barrel coated in titanium nitride, or TiN. Exact some godlike vengeance on paper targets with accuracy and precision at your local range. This is a titanium nitride-coated Glock®…

  • Sale! Ghost Complete Trigger Kit - Pro 3.3

    Ghost Complete Trigger Kit – Pro 3.3

    Original price was: $49.95.Current price is: $41.97.

    You’re taking steps to build your own double stack Glock® compatible pistol. You have a size whatever, gen whatever. And you’ve bothered to learn enough about triggers beyond just hearing “you need these parts” and then blindly just using the trigger parts that come in your LPK during your build. You want a “smoother than…

  • Glock 17 & 19 Compatible RMR Cover Plate - FDE

    GlockĀ® 17 & 19 Compatible RMR Cover Plate – FDE

    $16.99

    Look. Maybe you just spent all that money on buying matching FDE-colored parts for and then building a Glock® 17 or 19 or compatible 17 or 19. You even picked out an FDE slide that’s already been cut to accept a Trijicon RMR optic sight, or maybe you had an OEM slide cut for it…

  • GlockĀ® Bench Mat

    GlockĀ® Bench Mat

    $11.99

    The Glock® is famous for being durable and a workhorse. This bench mat is certainly just as durable. It is a must have for any Glock® owner! This heavy-duty, rubber bench mat is the icing on the cake to your work bench. The mat’s oil resistant surface gives you an exploded diagram of a Glock®…

  • Sale! GlockĀ® 43 Compatible Slide - LFA Elite, FDE

    GlockĀ® 43 Compatible Slide – LFA Elite, FDE

    Original price was: $224.99.Current price is: $119.99.

    The LFA Elite Glock® 43 Compatible Slide in the FDE color is a great-looking way to make your build really stand out. Designed from heat treated 416R stainless steel, this eye-catching slide is extremely durable. It features an elite series cerakote and is treated at RC 45-48. It’s compatible with Glock® OEM frames and parts,…

  • GlockĀ® 19 Compatible Match Grade, Stainless Steel Barrel - Gen 1-4

    GlockĀ® 19 Compatible Stainless Steel Barrel – Gen 1-4

    $79.99

    Choose stainless over OEM black. Your Glock® 19 compatible build needs a barrel. Start people asking you questions without saying a word. Let ’em check out your new sidearm, and let the polished shine of a stainless steel match grade barrel catch their eye. That’s when you let ’em know you built it yourself. And…

  • Sale! GlockĀ® 43 Compatible Barrel - Stainless Steel

    GlockĀ® 43 Compatible Barrel – Stainless Steel

    Original price was: $119.99.Current price is: $99.97.

    Let assist you in giving your Glock® 43 build the shiniest and best part of the upper half. This excellent stainless steel Glock® 43 compatible barrel is created from heat-treated 416R stainless forgings and has tighter than factory-spec dimensions for better accuracy and lock-up. This barrel’s luster provides more aesthetic appeal too. See below for…

  • Sale! Sig SauerĀ® 3MOA 1X30mm Reflex Sight - Romeo1 PRO

    Sig SauerĀ® 3MOA 1X30mm Reflex Sight – Romeo1 PRO

    Original price was: $429.99.Current price is: $239.99.

    Sig Sauer’s produced some of the most reliable and accurate handguns in the world, but they’ve also managed to push the envelope even further by developing one of the most lightweight, compact and capable micro red dots, ever: The Romeo1 PRO Reflex Sight. To achieve its incredibly small size and light weight, the Romeo1 PRO…

  • LFA Elite - GlockĀ® 19 Compatible Slide 1

    LFA Elite RMR Optic Cut GlockĀ® 19 Compatible Slide – Black Cerakote

    $214.99

    Forged, Lightweight, Vented 9mm Slide with Optic Cut for GLOCK® 19 Builds Step up from a standard OEM-spec slide with this forged 416R stainless slide, built for builders who want a lighter, faster-cycling upper without sacrificing durability. The forged construction shaves weight while keeping the slide tough enough to handle heavy round counts. The RMR-pattern…

  • Lower Parts Kit for GlockĀ® 17 Compatible Pistol

    Lower Parts Kit for GlockĀ® 17 Compatible Pistol

    $44.99

    So you’re ready to build a 3rd gen GlockĀ® 17 compatible full-sized pistol. You’ve completed the first step of getting your GlockĀ® 17 compatible 3rd gen full-sized frame ready to go. Now comes the part where you track down all the internal parts needed to get your frame up and running. No need to search…

  • Lower Parts Kit for GlockĀ® 19 Compatible Pistol

    Lower Parts Kit for GlockĀ® 19 Compatible Pistol

    $44.99

    So you’re ready to build a 3rd gen GlockĀ® 19 compatible compact-sized pistol. You’ve completed the first step of getting your GlockĀ® 19 compatible 3rd gen compact frame ready to go. Now comes the part where you track down all the internal parts needed to get your frame up and running. No need to search…

  • Sale! SSR-3.5˜Super Short Reset 3.5 lb Connector by LANTAC

    SSR-3.5~ Super Short Reset 3.5 lb Connector by LANTAC

    Original price was: $24.99.Current price is: $15.97.

    When it comes to brand new Glock® pistols, some people don’t like the feel of the factory trigger. But it’s alright, fixing a bad trigger pull is one of the simplest jobs you can do on your new sidearm’s internal components. What’s more, if you’re building your own Glock® compatible with our parts or kits,…

  • GlockĀ® 17 Compatible Barrel - Gen 3 5

    Gen 3 GlockĀ® 17 Compatible Barrel

    $59.99

    Give that gen 3 Glock® 17 or full-sized Glock® compatible 17 pistol an upgrade with this G17 barrel. Made with proper US craftsmanship, this Gen3 barrel boasts the highest level of quality and accuracy you’ll ever find in any full-sized pistol. Manufactured from heat-treated 416R stainless, this Gen3 barrel will guarantee consistent shop shot groups…

  • gen-3-glock-19-compatible-barrel-2

    Gen 1-4 GlockĀ® 19 Compatible Barrel

    $69.99

    Give that gen 1-4 Glock® 19 or mid-sized Glock® compatible 19 pistol an upgrade with this G19 barrel. Made with proper US craftsmanship, this Gen 1-4 barrel boasts the highest level of quality and accuracy you’ll ever find in any full-sized pistol. Manufactured from heat-treated 416R stainless, this 1-4 barrel will guarantee consistent shop shot…

  • Complete Slide Kit - LFA Elite RMR Optic Cut GlockĀ® 17 Compatible Slide - Black Cerakote

    Complete Slide Kit – LFA Elite RMR Optic Cut GlockĀ® 17 Compatible Slide – Black Cerakote

    Price range: $324.99 through $339.99

    Full-Size Forged Slide Kit — Lightweight, Optic-Ready, Ready to Assemble Trade your factory G17 slide for something lighter and optic-ready in one order. This kit bundles the forged LF17 Elite slide with your choice of barrel and a complete upper parts kit, leaving just sights (or your red dot) to finish the job. The forged…

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  • LFA Elite FDE GlockĀ® 17 Compatible Complete Slide Kit w/ Black Nitride Barrel

    Complete Slide Kit – LFA Elite RMR Optic Cut GlockĀ® 17 Compatible Slide – FDE Cerakote

    Price range: $324.99 through $339.99

    Forged G17 Slide Kit Finished in FDE, Vented, and Ready for a Red Dot Trade your factory G17 slide for something lighter and optic-ready in Flat Dark Earth, all in one order. This kit bundles the forged LF17 Elite slide with your choice of barrel and a complete upper parts kit, leaving just sights (or…

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  • Complete Slide Kit - Rear Serrated GlockĀ® 17 Compatible Slide - FDE Cerakote

    Complete Slide Kit – Rear Serrated GlockĀ® 17 Compatible Slide – FDE Cerakote

    $249.99

    FDE Slide Build Kit for Full-Size GLOCK® 17 Compatible Pistols Give your G17-pattern build a Flat Dark Earth finish without sourcing parts separately. This kit bundles our FDE Cerakote slide with your choice of barrel and a full upper parts kit, so the only thing left to add is sights. The slide is machined from…

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  • Complete Slide Kit - Rear Serrated GlockĀ® 19 Compatible Slide - Black Cerakote

    Complete Slide Kit – Rear Serrated GlockĀ® 19 Compatible Slide – Black Cerakote

    Price range: $239.99 through $249.99

    Complete GLOCK® 19 Compatible Slide Build Kit – OEM Rear Serrated, Black Cerakote Everything you need to finish the upper half of your G19-pattern build in one kit — just add sights. This kit pairs our OEM-spec, rear-serrated slide with your choice of barrel and a complete upper parts kit, so you can go from…

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  • Complete Slide Kit - RMR Optic Cut GlockĀ® 17 Compatible Slide - Black Cerakote

    Complete Slide Kit – RMR Optic Cut GlockĀ® 17 Compatible Slide – Black Cerakote

    Price range: $249.99 through $269.99

    Full-Size Optic-Ready Slide Kit, Barrel and Internals Included Skip sourcing parts separately for your G17-pattern build — this kit pairs a Trijicon RMR-cut, Black Cerakote slide with your choice of barrel and a full upper parts kit, so all that’s left is sights or your red dot of choice. Machined from 416R stainless to GLOCK®…

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  • Complete Slide Kit - RMR Optic Cut GlockĀ® 17 Compatible Slide - FDE Cerakote

    Complete Slide Kit – RMR Optic Cut GlockĀ® 17 Compatible Slide – FDE Cerakote

    Price range: $249.99 through $269.99

    Full-Size Optic-Ready Slide Kit Finished in FDE, Barrel and Internals Included Give your G17-pattern build a Flat Dark Earth finish and optic readiness in one order. This kit pairs a Trijicon RMR-cut, FDE Cerakote slide with your choice of barrel and a full upper parts kit, so all that’s left is sights or your red…

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  • Complete Slide Kit - RMR Optic Cut GlockĀ® 19 Compatible Slide - Black Cerakote

    Complete Slide Kit – RMR Optic Cut GlockĀ® 19 Compatible Slide – Black Cerakote

    Price range: $249.99 through $279.99

    Optic-Ready Slide, Barrel, and Internals — One Kit, One Checkout Finish the upper half of your G19-pattern build with an optic-ready setup right out of the box — just add sights (or your red dot of choice) once assembled. This kit pairs our RMR-cut, Black Cerakote slide with your choice of barrel and a full…

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U.S.-made handgun parts for GLOCK, Polymer80 and 1911.

Building a custom GLOCK-compatible P80 handgun or 1911 from scratch? Want to upgrade your factory pistol with some high-performance components? You’re in the right place: We have a quality selection of US-made parts, barrels, slides, internals, and accessories for those platforms. Whether you need a threaded barrel, ported and optic-cut slide, parts kit, or an upgraded trigger, we have you covered.

Handgun Parts to Upgrade Your GLOCK or 1911

Building a P80-framed hand? Grab a GLOCK-compatible parts kit to to finish your build after fabricating your frame. Take the opportunity to upgrade with a custom slide and barrel, too! We’ve sourced a quality selection of GLOCK slides that include unique coatings, RMR cuts for a micro red dot, and lightweight designs.

Custom 1911 and P80 parts

Custom 1911s can fetch premium prices. But if you want to own a custom .45 or 9mm, you don’t have to pay those high prices. Fabricating your 1911 from an aluminum 80% frame means you get to cherry-pick the upgraded parts you want to finish your build. Pair your frame with the Stealth Arms 1911 Jig to start fabricating. Once fabricated, you can install your upgraded 1911 barrel, slide, and parts kit.

How to Complete an 80% 1911 Frame

State Laws Vary

Some states have banned certain firearm parts, including parts available and shown here. We cannot fulfill orders placed by residents in those restricted states. Check your local and state laws, and please confirm whether we can ship to your state before ordering.


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 GunBuilders.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: ā€œGLOCKā€ 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 Gun Builders Depot, a/k/a GunBuilders.com nor this site are affiliated in any manner with, or otherwise endorsed by, GLOCK, Inc. or GLOCK Ges.m.b.H. The use of ā€œGLOCKā€ 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: ā€œSig Sauerā€ is a federally registered trademark of Sig Sauer, Inc. and is one of many trademarks owned by Sig Sauer, Inc. Neither GunB Builders Depot, a/k/a GunBuilders.com nor this site are affiliated in any manner with, or otherwise endorsed by, Sig Sauer, Inc. The use of ā€œSig Sauerā€ 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.