Shipping within 2-3 business days due to high demand

phone: 888-310-0284

Handgun Parts

30 of 119 Items
  • Sale
    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: $64.99
    Now: $39.97
  • 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

    This optic-ready slide assembly is the perfect way to finish off your Polymer80 .45 ACP build, or upgrade your current Gen 3 G21 pistol. With front and rear serrations, iron sight mounts, and an RMR footprint, this slide is ready for your favorite reflex...

    Was: $269.99
    Now: $249.97
  • Sale
    Glock® Compatible 19 Gen 4 Lower Parts Kit

    Glock® Compatible 19 Gen 4 Lower Parts Kit

    We take factory Glock® compatible 19 pistols and completely mod and customize them. In the same way the AR-15 is the most adaptable rifle in the world, the Glock® compatible pistol is the most adaptable handgun. However, the vast majority of the...

    Was: $99.99
    Now: $79.97
  • Sale
    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: $19.99
    Now: $14.97
  • Sale
    Ghost Ultimate 3.5 lb Trigger For Glocks® - Gen 1-5

    Ghost Ultimate 3.5 lb Connector For Glock® - 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: $17.95
    Now: $13.97
  • Sale
    Glock® OEM Front Sight Glock® OEM Front Sight 2 Glock® OEM Front Sight 3

    Glock® OEM Front Sight

    Finish your frame with a factory GLOCK® Front Sight. Ready to finish your P80 frame? Or need to swap out your factory pistol's front sight? Grab the OEM Steel Front Sight. This simple, universal-fit sight is compatible with all GLOCK® models...

    Was: $19.99
    Now: $13.97
  • Sale
    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...

    Was: $49.99
    Now: $39.97
  • Sale
    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 - .45acp 4 Glock® 21 Compatible RMR Cut Slide - .45acp 5

    Glock® 21 Compatible RMR Cut Slide - .45 ACP

    Gen 3 compatible. RMR optic-cut. Ready for your PF45 build. Completing a Polymer80 frame? Ready to upgrade your Gen 3 GLOCK® 21 and throw a red dot on it? This Glock® 21-Compatible, RMR-cut slide is the ticket. It's cut from 416R stainless,...

    Was: $169.99
    Now: $149.97
  • 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: $109.99
    Now: $94.97
  • Sale
    Firing Pin Channel Liner For Glock®

    Firing Pin Channel Liner For Glock®

    This OEM firing pin channel liner fits all GLOCKs. Not required for GLOCK® 42 or G43. The firing pin channel liner's a critical component of any GLOCK® or Polymer80 slide. This liner is considered a single-use component; removal requires...

    Was: $5.99
    Now: $3.97
  • Sale
    Complete RMR Slide Assembly for Glock® 19 Complete RMR Slide Assembly for Glock® 19 Complete RMR Slide Assembly for Glock® 19 Complete RMR Slide Assembly for Glock® 19 Complete RMR Slide Assembly for Glock® 19

    Complete RMR Slide Assembly for Glock® 19

    This optic-ready slide assembly is the perfect way to upgrade your current Gen 3 G19 pistol. With front and rear serrations, iron sight mounts, and an RMR footprint, this slide is ready for your favorite reflex sight and compatible irons. Optics and RMR...

    Was: $219.99
    Now: $199.99
  • Sale
    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: $3.99
    Now: $2.97
  • 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

    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...

    Was: $24.99
    Now: $15.97
  • Sale
    Glock® 42/43 OEM Polymer Fixed Rear Sight Glock® 42/43 OEM Polymer Fixed Rear Sight 2 Glock® 42/43 OEM Polymer Fixed Rear Sight 3

    Glock® 42/43 OEM Polymer Fixed Rear Sight 6.1mm

    GLOCK's® factory "poly" fixed rear sight for G42/43. Keep it simple and save your cash (for that sweet barrel or trigger). The polymer 6.1mm factory rear sight provides a quick and simple solution for your G42 and G43. Use it to finish your...

    Was: $9.99
    Now: $4.97
  • Sale
    Glock® OEM Front Night Sight Glock® OEM Front Night Sight 2 Glock® OEM Front Night Sight 3

    Glock® OEM Front Night Sight

    Genuine GLOCK® OEM front night sight with Tritium. Sometimes, factory is best. The NF17G24 fits all Gen 1 to 5 pistols, including the GLOCK® 17, 19, 22, 23, 24, 26, 27, 33, 34, 35, 37, 38, and 39. GLOCK's® night sights provide simple but...

    Was: $59.99
    Now: $39.97
  • Sale
    Sylvan Arms - 9MM Glock® Compensator - 1/2 x 28 RH Sylvan Arms - 9MM Glock® Compensator - 1/2 x 28 RH 2 Sylvan Arms - 9MM Glock® Compensator - 1/2 x 28 RH 3

    Sylvan Arms - 9MM Glock® Compensator - 1/2 x 28 RH

    Sylvan Arms Compensator: The affordable way to better accuracy. Sylvan Arms' 9MM GLOCK® Comp provides an immediate reduction in muzzle rise and felt recoil, dialing in your shot groups with little effort. It installs easily, requiring no custom...

    Was: $89.99
    Now: $69.97
  • Sale
    Rival Arms Compact Guide Rod for Sig Sauer® P320™ Rival Arms Compact Guide Rod for Sig Sauer® P320™

    Rival Arms Compact Guide Rod for Sig Sauer® P320™

    Upgrade your polymer guide rod with stainless steel. The P320™ is one helluva gun -- but it isn't perfect. Sig's love for polymer is wellknown, but this affinity for plastic can hinder the reliability and accuracy of your favorite pistol. The Rival...

    Was: $39.99
    Now: $31.99
  • Sale
    GLOCK® 21 Compatible Stainless Steel Fluted Barrel 4 GLOCK® 21 Compatible Stainless Steel Fluted Barrel 5 GLOCK® 21 Compatible Stainless Steel Fluted Barrel 6 GLOCK® 21 Compatible Stainless Steel Fluted Barrel GLOCK® 21 Compatible Stainless Steel Fluted Barrel 2

    GLOCK® 21 Compatible Stainless Steel Fluted Barrel

    GLOCK® 21 and P80 compatible. Fluted for weight savings. Fully polished stainless. There's a lot of quality packed into this little G21-compatible barrel. It's been forged from high-quality 416R stainless steel, cut and fluted to reduce weight, then...

    Was: $99.99
    Now: $84.97
  • Sale
    P320™ Upper Parts Kit P320™ Upper Parts Kit P320™ Upper Parts Kit P320™ Upper Parts Kit P320™ Upper Parts Kit

    P320™ Upper Parts Kit

    Finish your custom 9mm P320™ slide. This quality, OEM-spec P320™ upper parts kit provides the internals necessary for assembling your custom P320™ slide. It's also compatible with factory slides, allowing you swap components as needed...

    $63.97 - $89.97
  • Sale
    Glock® 21 Compatible Barrel Glock® 21 Compatible Barrel Glock® 21 Compatible Barrel Glock® 21 Compatible Barrel

    Glock® 21 Compatible Barrel

    Top-tier performance at an unbeatable price For consistent cycling and optimal accuracy across all .45 ACP loads, relying on factory-spec components such as this DLC-coated, G21-compatible barrel is a wise choice. Barrel Compatibility This barrel fits...

    Was: $99.99
    Now: $67.97
  • Sale
    Glock® 19 Compatible Barrel - PVD Chameleon Glock® 19 Compatible Barrel - PVD Chameleon 2

    Glock® 19 Compatible Barrel - PVD Chameleon

    "Stock" is boring. Put a sense of style and attitude in your Glock® 19 compatible build. Get a barrel finished with that "oil slick" pattern with this Glock® 19 Compatible Barrel in the PVD Chameleon color. This barrel performs just as well as an...

    Was: $89.99
    Now: $59.97
  • Sale
    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: $22.95
    Now: $17.97
  • Sale
    Glock® 43 Compatible RMSC Cut Bull Nose Slide 1 Glock® 43 Compatible RMSC Cut Bull Nose Slide 2 Glock® 43 Compatible RMSC Cut Bull Nose Slide 3 Glock® 43 Compatible RMSC Cut Bull Nose Slide 4 Glock® 43 Compatible RMSC Cut Bull Nose Slide 5

    Glock® 43 Compatible RMSC Cut Bull Nose Slide

    Improved serrations, better looks, and RMSc-cut. This upgraded GLOCK® 43 slide provides the perfect upgrade for your Gen 3 factory pistol or your Polymer80 PF9SS build. It sports 3D cut and raised front and rear serrations, a slick bull nose front,...

    Was: $189.99
    Now: $119.97
  • Sale
    Glock® 26 Compatible Barrel - TiN Glock® 26 Compatible Barrel - TiN 2

    Glock® 26 Compatible Barrel - TiN

    Make your Glock® 26 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: $99.99
    Now: $59.97
  • Sale
    Glock® 19 Gen 5 Compatible Slide - LFA Elite Black Glock® 19 Gen 5 Compatible Slide - LFA Elite Black Glock® 19 Gen 5 Compatible Slide - LFA Elite Black Glock® 19 Gen 5 Compatible Slide - LFA Elite Black Glock® 19 Gen 5 Compatible Slide - LFA Elite Black

    Glock® 19 Gen 5 Compatible Slide - LFA Elite Black

    Machined from 416 stainless. Features Trijicon RMR cut. This gen 5-compatible GLOCK® slide provides a perfect upgrade for your factory pistol. Machined from 416 Crucible stainless and finished in matte black Cerakote, it's guaranteed to withstand...

    Was: $199.99
    Now: $169.97
30 of 119 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.