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Handgun Parts

  • Sale
    Glock® 43 Compatible Slide - LFA Elite Black 1 Glock® 43 Compatible Slide - LFA Elite Black 2 Glock® 43 Compatible Slide - LFA Elite Black 3 Glock® 43 Compatible Slide - LFA Elite Black 4

    Glock® 43 Compatible Slide - LFA Elite Black

    The LFA Elite Glock® 43 Compatible Slide is crafted from heat-treated 416R stainless steel for extreme durability. Its finish was done with Elite Series cerakote and heat-treated at RC 45-48. The LFA Elite is compatible with Glock® OEM,...

    Was: $224.99
    Now: $143.97
  • Sale
    Nitride & Ported 9mm Barrel for Full-size P320™ w/ 4.7" Slide Nitride & Ported 9mm Barrel for Full-size P320™ w/ 4.7" Slide

    Nitride Ported Barrel for Full-Size Sig P320™ (9mm)

    Reduce your P320's™ recoil and stay on target. When paired with the Full-Size Ballistic Diffusion/Emission (B.D.E.) Slide from KMT, this ported P320™ barrel offers significant recoil reduction and muzzle rise, allowing you to maintain your...

    Was: $129.99
    Now: $84.97
  • Sale
    Glock® Compatible Non-Adjustable Pyramid Trigger - Black

    Glock® Compatible Non-Adjustable Pyramid Trigger - Black

    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,...

    Was: $199.99
    Now: $99.97
  • Sale
    Glock® 17 Compatible Barrel - TiN

    Glock® 17 Compatible Barrel - TiN

    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...

    Was: $109.99
    Now: $79.97
  • Sale
    Compact Barrel for Sig Sauer® P320™ - TiN Compact Barrel for Sig Sauer® P320™ - TiN Compact Barrel for Sig Sauer® P320™ - TiN Compact Barrel for Sig Sauer® P320™ - TiN

    Compact Barrel for Sig Sauer® P320™ - TiN

    Gold-tier performance for your P320™ Compact. This gold TiN P320™ barrel provides the best in accuracy and aesthetics. Forged from Crucible 416R stainless, broach rifled for better accuracy, and finished in a micron-accurate Titanium Nitride...

    Was: $74.99
    Now: $39.97
  • Sale
    Compact Barrel for Sig Sauer® P320™ - Nitride Black Compact Barrel for Sig Sauer® P320™ - Nitride Black Compact Barrel for Sig Sauer® P320™ - Nitride Black Compact Barrel for Sig Sauer® P320™ - Nitride Black

    Compact Barrel for Sig Sauer® P320™ - Nitride Black

    Forged from match-grade 416R stainless. Nitrided. Improve the accuracy of your P320™ Compact quickly and easily with this upgraded drop-in barrel. It's forged from Crucible 416R Stainless -- the same steel developed specifically for F-class bench...

    Was: $74.99
    Now: $39.97
  • Sale
    ETS G43 7-Round Mag (9mm) + Pearce Grip Extension ETS G43 7-Round Mag (9mm) + Pearce Grip Extension 2 ETS G43 7-Round Mag (9mm) + Pearce Grip Extension 3 ETS G43 7-Round Mag (9mm) + Pearce Grip Extension 4 ETS G43 7-Round Mag (9mm) + Pearce Grip Extension 5

    ETS G43 7-Round Mag (9mm) + Pearce Grip Extension

    Situational awareness counts. That's why ETS has taken the idea of counting your rounds to the next level with their see-through magazines. Designed for the G43 platform, this 7-round mag allows you to keep track of your rounds without sacrificing...

    Was: $29.99
    Now: $21.97
  • 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...

    $44.99
  • 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...

    $44.99
  • 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
  • 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® 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® Compatible Competition Spring Kit

    Glock® Compatible Competition Spring Kit

    So you're saying you're not exactly like me as a gen 1-4 Glock® compatible shooter? So you're saying your performance preferences aren't exactly like mine? Well, I guess you could always customize the crap out of your gen 1-4 Glock® compatible...

    $14.99
  • 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,...

    $79.99
  • Glock® 17 Compatible Barrel - Gen 3 5 Glock® 17 Compatible Barrel - Gen 3 6 Glock® 17 Compatible Barrel - Gen 3 Glock® 17 Compatible Barrel - Gen 3 2 Glock® 17 Compatible Barrel - Gen 3 3

    Gen 3 Glock® 17 Compatible Barrel

    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...

    $59.99
  • LFA Elite Black Glock® 17 Compatible Slide 1 LFA Elite Black Glock® 17 Compatible Slide 2 LFA Elite Black Glock® 17 Compatible Slide 3 LFA Elite Black Glock® 17 Compatible Slide 4

    LFA Elite Black Glock® 17 Compatible Slide

    The LFA 17 Elite Slide is designed out of 416 stainless steel, which is heat treated at 38-42 HRC for ultimate strength and durability. This slide is lightweight with a smoother ejection compared to others and available with multiple aftermarket...

    $209.99
  • 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 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...

    $69.99
  • Glock® 17 Compatible Slide w/ Rear Serration - Black Glock® 17 Compatible Slide w/ Rear Serration - Black 2 Glock® 17 Compatible Slide w/ Rear Serration - Black 3 Glock® 17 Compatible Slide w/ Rear Serration - Black 4 Glock® 17 Compatible Slide w/ Rear Serration - Black 5

    Glock® 17 Compatible Slide w/ Rear Serration - Black

    This OEM-style, GLOCK® 17-Compatible Custom Slide features rear serrations and is compatible with all Gen 3 factory frames. Finishing up a 80% full-sized pistol frame? This is the stripped slide you need to get the job done. Machined from quality 416...

    $129.99
  • Glock 17 & 19 Compatible RMR Cover Plate - FDE Glock 17 & 19 Compatible RMR Cover Plate - FDE

    Glock® 17 & 19 Compatible RMR Cover Plate - FDE

    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...

    $16.99
  • 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 4

    Glock® 19 Compatible Slide w/ Rear Serration

    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...

    $149.99

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.