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36 of 83 Items
  • Lower Parts Kit for Glock® 19 Compatible Pistol

    Lower Parts Kit for Glock® 19 Compatible Pistol

    So you're ready to build a 3rd gen Glock® 19 compatible compact-sized pistol. You've completed the first step of getting your Glock® 19 compatible 3rd gen compact frame ready to go. Now comes the part where you track down all the internal parts...

    $49.99
  • Lower Parts Kit for Glock® 17 Compatible Pistol

    Lower Parts Kit for Glock® 17 Compatible Pistol

    So you're ready to build a 3rd gen Glock® 17 compatible full-sized pistol. You've completed the first step of getting your Glock® 17 compatible 3rd gen full-sized frame ready to go. Now comes the part where you track down all the internal parts...

    $49.99
  • Glock® 43 Compatible Lower Parts Kit

    Glock® 43 Compatible Lower Parts Kit

    If you're planning to build a Glock® 43 compatible pistol, we commend your initiative. During the process, you'll need a lower parts kit. We're here to help you out. This Glock® 43 compatible lower parts kit comes with everything you need to turn...

    $59.99
  • Magpul PMAG G19 15rd Magazine Magpul PMAG G19 15rd Magazine 2

    Magpul® PMAG G19 15rd Magazine

    Magpul is dedicated to improving your shooting experience through innovative firearm accessories, and the Magpul PMAG G19 15rd Magazine is just one of many. This 9mm magazine is made from polymer, so it is rugged enough to take a beating while still...

    $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 one of the most affordable magazines that can give those in higher price points a run fort their money. With a complete polymer construct, this magazine is lightweight and extremely rugid and even comes with a 17th round...

    $14.20
  • Sig Sauer® P320 Lower Parts Kit - 9mm/.40/.357

    Sig Sauer® P320™ Lower Parts Kit - 9mm/.40/.357

    If you're working on a Sig Sauer® P320 compatible 80% build, you're gonna need a lower parts kit to get your MUP-1 working. That's the part legally considered the firearm, and it's also the part all your frames, slides, etc., house to convert your...

    $149.99
  • Glock® Compatible Flash Hider Glock® Compatible Flash Hider 2 Glock® Compatible Flash Hider 3 Glock® Compatible Flash Hider 4 Glock® Compatible Flash Hider 5

    Glock® Compatible Flash Hider - 9mm

    Wanna to reduce the muzzle signature from your Glock® compatible build? Maybe you intend to train at night. Maybe you carry your sidearm as a backup while you hunt. Whatever the reason, if your Glock® compatible sidearm's got a threaded barrel,...

    $24.99
  • glock-compatible-tungsten-slide-t19-1 glock-compatible-tungsten-slide-t19-2 glock-compatible-tungsten-slide-t19-3

    Glock® Compatible Slide - T19

    Make your Glock® 19 compatible pistol build a little more custom, and a little less brick with this slide. Sure, it performs as well as an OEM slide, because it meets OEM specs. But this one's got the added bonus of being coated in 4150 tungsten...

    $129.99
  • Glock® 19 Compatible Upper Parts Kit

    Glock® 19 Compatible Upper Parts Kit

    If you've decided on the 80% route to build yourself a gen 3 Glock® 19 compatible pistol, then you gotta get an upper parts kit to match. We can assist you with that. Glock® 19 Compatible Upper Parts Kit is just what you need. It comes with all...

    $54.99
  • Glock® 17 Compatible Upper Parts Kit

    Glock® 17 Compatible Upper Parts Kit

    If you've decided on the 80% route to build yourself a gen 3 Glock® 17 compatible pistol, then you gotta get an upper parts kit to match. We can assist you with that. Glock® 17 Compatible Upper Parts Kit is just what you need. It comes with all...

    $59.99
  • Glock® 17 Compatible Threaded Barrel - Black

    Glock® 17 Compatible Threaded Barrel - Black

    Got plans to improve the performance of your Glock® 17 compatible build even further by going with a barrel, to allow you to install a muzzle device? Or perhaps you've got a suppressor picked out or are planning to do a solvent trap build? First off,...

    $69.99
  • Glock® 43 Compatible Pistol Build Kit w/ Black Slide Glock® 43 Compatible Pistol Build Kit w/ Black Slide 2 Glock® 43 Compatible Pistol Build Kit w/ Black Slide 3 Glock® 43 Compatible Pistol Build Kit w/ Black Slide 4 Glock® 43 Compatible Pistol Build Kit w/ Black Slide 5

    Glock® 43 Compatible Pistol Build Kit w/ Black Slide

    For the vast majority of "gunfights," that is to say for the vast majority of life-and-death situations you could find yourself in where you need to defend either your own or someone else's life with a sidearm, statistically, on average the defender...

    $399.99 - $419.99
  • Glock® OEM Parts Tray Glock® OEM Parts Tray 2

    Glock® OEM Parts Tray

    When you're doing work on your Glock® or compatible pistol, you need someplace to keep your small parts where you're guaranteed they won't roll off the work bench or get lost. Otherwise, you could spend a disproportionate amount of time on your hands...

    $5.99
  • 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

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

    $16.99
  • Glock® 43 Compatible Black Slide Glock® 43 Compatible Black Slide 2 Glock® 43 Compatible Black Slide 3 Glock® 43 Compatible Black Slide 4 Glock® 43 Compatible Black Slide 5

    Glock® 43 Compatible Black Slide

    If your aim is to build a Glock® 43 compatible or Glock® 43X compatible pistol, and you like that classic look for your slide better than the flashiness of some of the more cut out aggressive looking slides, then this is your slide. This...

    $139.99
  • SIG SAUER® Compatible Slide - P320, Black Cerakote SIG SAUER® Compatible Slide - P320, Black Cerakote 2 SIG SAUER® Compatible Slide - P320, Black Cerakote 3 SIG SAUER® Compatible Slide - P320, Black Cerakote 4 SIG SAUER® Compatible Slide - P320, Black Cerakote-5

    SIG SAUER® Compatible Slide - P320, Black Cerakote

    The P320 by Sig Sauer® is an extremely adaptable sidearm. It can be nearly any size of pistol you need it to be due to its ability to change out its frames, or its "grip modules." This unique feature makes it easy to understand why so many people...

    $279.99
  • Glock® 17 Compatible Slide w/ RMR Optic Cut Slide Glock® 17 Compatible Slide w/ RMR Optic Cut Slide 2 Glock® 17 Compatible Slide w/ RMR Optic Cut Slide 3 Glock® 17 Compatible Slide w/ RMR Optic Cut Slide 4 Glock® 17 Compatible Slide w/ RMR Optic Cut Slide 5

    Glock® 17 Compatible Slide w/ RMR Optic Cut Slide

    When building your Glock® 17 pistol, you'll want to ensure that it not only shoots accurately, but can be simple to aim. Well, this slide comes with an RMR cut, so you can add a sight of your preference. It features a  front- and rear-cut slide...

    $149.99
  • 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
  • SIG SAUER® Compatible Full Size Barrel - P320, Black SIG SAUER® Compatible Full Size Barrel - P320, Black 2 SIG SAUER® Compatible Full Size Barrel - P320, Black 3 SIG SAUER® Compatible Full Size Barrel - P320, Black 4 SIG SAUER® Compatible Full Size Barrel - P320, Black 5

    Sig Sauer® Compatible Full Size Barrel - P320, Black

    The Sig Sauer® P320 is an amazingly versatile pistol. You can swap out its frames and parts all day, and each time you finish, you'll end up with a completely different sized pistol. This end-all be-all pistol eliminates the need to have a different...

    $99.99
  • Glock® 43 Compatible Slide - LFA Elite, FDE Glock® 43 Compatible Slide - LFA Elite, FDE Glock® 43 Compatible Slide - LFA Elite, FDE Glock® 43 Compatible Slide - LFA Elite, FDE Glock® 43 Compatible Slide - LFA Elite, FDE

    Glock® 43 Compatible Slide - LFA Elite, FDE

    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...

    $224.99
  • Glock® 43 Compatible Barrel - Stainless Steel Glock® 43 Compatible Barrel - Stainless Steel Glock® 43 Compatible Barrel - Stainless Steel Glock® 43 Compatible Barrel - Stainless Steel Glock® 43 Compatible Barrel - Stainless Steel

    Glock® 43 Compatible Barrel - Stainless Steel

    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...

    $169.99
  • Glock® 43 Compatible Barrel Glock® 43 Compatible Barrel 2 Glock® 43 Compatible Barrel 3 Glock® 43 Compatible Barrel 4 Glock® 43 Compatible Barrel 5

    Glock® 43 Compatible Barrel

    Let us be of assistance in giving your Glock® 43 build the most important part of the upper half. This excellent Glock® 43 compatible barrel, made from certified stress-relieved 416R stainless steel, has been finished using the salt-bath nitride...

    $149.99
  • RMR Optic Cut Slide - Glock® 19 Compatible Slide RMR Optic Cut Slide - Glock® 19 Compatible Slide-2 RMR Optic Cut Slide - Glock® 19 Compatible Slide-3 RMR Optic Cut Slide - Glock® 19 Compatible Slide-4 RMR Optic Cut Slide - Glock® 19 Compatible Slide-5

    RMR Optic Cut Slide - Glock® 19 Compatible Slide

    The Aim Surplus 2S RMR Cut Slide is made out of a durable 416 stainless steel slide coated with a black diamond carbon finish. The 2S has double serrations and Trijicon RMR base pattern cut designed for peak performance. Additionally, this slide is...

    $149.99
  • LFA Elite - Glock® 19 Compatible Slide LFA Elite - Glock® 19 Compatible Slide 2 LFA Elite - Glock® 19 Compatible Slide 3 LFA Elite - Glock® 19 Compatible Slide 4 LFA Elite - Glock® 19 Compatible Slide 5

    LFA Elite - Glock® 19 Compatible Slide

    The "LFA Elite" from Live Free Armory is manufactured out of 416 precision stainless steel which is heat treated at 38-42 HRC for ultimate strength and durability. This slide is lighter in weight with a smoother ejection compared to others. Additionally,...

    $244.99
  • Glock® 19 Compatible Slide w/ Rear Serration - FDE Glock® 19 Compatible Slide w/ Rear Serration - FDE 2 Glock® 19 Compatible Slide w/ Rear Serration - FDE 3 Glock® 19 Compatible Slide w/ Rear Serration - FDE 4 Glock® 19 Compatible Slide w/ Rear Serration - FDE 5

    Glock® 19 Compatible Slide w/ Rear Serration - FDE

    Assembling your own Glock 19 pistol with OEM parts doesn't mean it has to be boring or plain. Grab this FDE slide with to add a bit of style to your new 3rd gen pistol. It comes with rear serrations for improved handling as well as 4150 tungsten coating...

    $129.99
  • GLOCK® 26 Compatible Barrel GLOCK® 26 Compatible Barrel 2

    GLOCK® 26 Compatible Barrel

    Give that gen 3 Glock® 26 or subcompact-sized Glock® compatible 26 pistol an upgrade with this G6 barrel. Made with proper US craftsmanship, this Gen3 barrel boasts the highest level of quality and accuracy you’ll ever find in any...

    $79.99
36 of 83 Items

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: “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 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 “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 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 “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.

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.