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36 of 70 Items
  • Sale
    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...

    Was: $59.99
    Now: $49.99
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    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...

    Was: $59.99
    Now: $49.99
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    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...

    Was: $71.99
    Now: $59.99
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    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...

    Was: $179.99
    Now: $149.99
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    Glock® 43 Compatible Pistol Build Kit w/ FDE Elite Slide Glock® 43 Compatible Pistol Build Kit w/ FDE Elite Slide 2 Glock® 43 Compatible Pistol Build Kit w/ FDE Elite Slide 3 Glock® 43 Compatible Pistol Build Kit w/ FDE Elite Slide 4 Glock® 43 Compatible Pistol Build Kit w/ FDE Elite Slide 5

    Glock® 43 Compatible Pistol Build Kit w/ FDE Elite Slide

    The debate is decrepit at this point. You know what I'm talking about. It's the old-ass "carry the biggest bullet in your sidearm with the most knockdown power you can handle" argument versus the "bullet size doesn't matter as much as where you can...

    $469.99 - $489.99
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    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...

    Was: $155.99
    Now: $129.99
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    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...

    Was: $17.04
    Now: $14.20
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    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,...

    Was: $29.99
    Now: $24.99
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    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...

    Was: $20.39
    Now: $16.99
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    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...

    Was: $335.99
    Now: $279.99
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    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,...

    Was: $83.99
    Now: $69.99
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    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...

    Was: $167.99
    Now: $139.99
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    gen-3-glock-19-compatible-barrel-2 gen-3-glock-19-compatible-barrel-1 gen-3-glock-19-compatible-barrel-3 gen-3-glock-19-compatible-barrel-4 gen-3-glock-19-compatible-barrel-5

    Gen 1-4 Glock® 19 Compatible Barrel

    Give that gen 1-4 Glock® 19 or mid-sized Glock® compatible 19 pistol an upgrage 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...

    Was: $95.99
    Now: $79.99
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    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...

    Was: $71.99
    Now: $59.99
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    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...

    Was: $65.99
    Now: $54.99
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    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...

    Was: $7.19
    Now: $5.99
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    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...

    Was: $119.99
    Now: $99.99
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    Glock® 19 Compatible Threaded Barrel - Black

    Glock® 19 Compatible Threaded Barrel - Black

    Got plans to improve the performance of your Glock® 19 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,...

    Was: $95.99
    Now: $79.99
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    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
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    Upper Parts Kit for Glock Compatible 43 & PF9SS Builds

    Upper Parts Kit for Glock 43 Compatible & PF9SS Builds

    If you intend to build a Glock® 43 compatible pistol, you'll find it a rewarding experience, but you'll need an upper parts kit for it. We've got your back. It has everything you need to turn that finished 80% Polymer80 PF9SS frame into the bottom...

    Was: $77.99
    Now: $64.99
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    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...

    Was: $17.04
    Now: $14.20
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    Ghost Ultimate 3.5 lb Trigger For Glocks® - Gen 1-5

    Ghost Ultimate 3.5 lb Connector For Glocks® - Gen 1-5

    For those of us who really put work in with our double-stack Glock® compatible pistols, we have to take extra care of our sidearms, so we don't have to spend more time cleaning the crap out of 'em after a good training session or duty. Too much...

    Was: $21.54
    Now: $17.95
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    Glock® Compatible Barrel Thread Protector - 9mm

    Glock® Compatible Barrel Thread Protector - 9mm

    So you have a threaded barrel on your 9mm Glock® compatible pistol, but it doesn't mean you have to a muzzle device or suppressor attached one-hundred percent of the time. Sometimes, you'll have your pistol stored or even on your person as your EDC...

    Was: $23.99
    Now: $19.99
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    Glock® Compatible 6.0 lb Trigger Spring – Gen 1-4

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

    You've gotten used to your gen 1-4 double-stack Glock® Compatible pistol's trigger and even think it performs adequately; you'd just like it to be a touch smoother and maybe a tiny bit lighter. No worries, we can help you out with the Glock®...

    Was: $4.79
    Now: $3.99
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    LWD Glock® Compatible Connector - 3.5 lb G42/43

    LWD Glock® Compatible Connector - 3.5 lb G42/43

    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...

    Was: $23.94
    Now: $19.95
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    Glock® 19 Compatible Match Grade, Stainless Steel Barrel - Gen 1-4 Glock® 19 Compatible Match Grade, Stainless Steel Barrel - Gen 1-4 2 Glock® 19 Compatible Match Grade, Stainless Steel Barrel - Gen 1-4 3 Glock® 19 Compatible Match Grade, Stainless Steel Barrel - Gen 1-4 4 Glock® 19 Compatible Match Grade, Stainless Steel Barrel - Gen 1-4 5

    Glock® 19 Compatible Stainless Steel Barrel - Gen 1-4

    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...

    Was: $95.99
    Now: $79.99
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    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...

    Was: $179.99
    Now: $149.99
36 of 70 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.