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On Sale

  • Sale
    Complete RMR Slide Assembly for Glock® 17 1 Complete RMR Slide Assembly for Glock® 17 2 Complete RMR Slide Assembly for Glock® 17 3 Complete RMR Slide Assembly for Glock® 17 4 Complete RMR Slide Assembly for Glock® 17 5

    Complete RMR Slide Assembly for Glock® 17

    This RMR-cut slide assembly is the perfect way to finish off your Polymer80 PF940v2 build, or give your current Gen 3 G17 pistol an upgrade. With front and rear serrations, iron sight mounts, and an RMR cut-out, this slide is ready for your favorite...

    Was: $219.99
    Now: $179.97
  • Sale
    AR-15 A2 "Birdcage" .223/5.56mm Flash Hider AR-15 A2 "Birdcage" .223/5.56mm Flash Hider 2

    AR-15 A2 "Birdcage" .223/5.56mm Flash Hider

    Your AR-15 needs a solid muzzle device right out of the gate to get your build up and running. The AR-15 A2 "Birdcage" .223/5.56mm Flash Hider is the jack of all trades when it comes to muzzle devices. Due to its 5-port design, it adequately conceals the...

    Was: $8.99
    Now: $4.97
  • Sale
    LANTAC SSR-3.5˜Super Short Reset 3.5 lb Connector

    LANTAC SSR-3.5 lb Super Short Reset 3.5 lb Connector

    Out of the box, some people don't like the feel of the factory trigger pull on their new Glock®. But not to worry, fixing an undesireable trigger pull is one of the easiest jobs you can do to the internal components. Even easier, if you're building...

    Was: $17.99
    Now: $9.97
  • Sale
    Magpul MagLink® Coupler – PMAG® 30/40 AR/M4

    Magpul® MagLink® Coupler - PMAG® 30/40 AR/M4

    The Magpul MagLink Coupler has a strong polymer design that is lightweight which allows the shooter to be quick and efficient with reloading. This two-piece non flex MagLink Coupler architecture, attaches two magazines together allowing the shooter to...

    Was: $17.05
    Now: $11.97
  • Sale
    AR-10 / LR-308 .308 Tactical Charging Handle AR-10 / LR-308 .308 Tactical Charging Handle AR-10 / LR-308 .308 Tactical Charging Handle

    AR-10 / LR-308 .308 Tactical Charging Handle

    Fact: you need a charging handle to put your AR-10 (Colt's proprietary design) or LR-308 (the other 90% of all .308 sized AR rifles out there) into battery. Here's one. This is a standard .308 sized charging handle that accommodates both the AR-10 and...

    Was: $15.99
    Now: $14.97
  • Sale
    Magpul® MOE® Polymer Rail, 5 Slots

    Magpul® MOE® Polymer Rail, 5 Slots

    Everybody knows M-Lok handguards are amazing when it comes to versatility in mounting your favorite accessories to your AR. But the handguard only gives you the real estate; it doesn't give you the means. Here are the means. This is a five-slot section...

    Was: $9.99
    Now: $6.97
  • Sale
    Glock® Compatible Competition Spring Kit

    Glock® Compatible Competition Spring Kit

    What do you mean you're not exactly like me as a gen 1-4 Glock® compatible shooter?! What do you mean your performance preferences aren't exactly like mine?! Well, I guess you'll just have to customize the hell out of your gen 1-4 Glock®...

    Was: $14.99
    Now: $12.97
  • Sale
    AR-9 80% Billet Lower Assembly Kit AR-9 80% Billet Lower Assembly Kit AR-9 80% Billet Lower Assembly Kit AR-9 80% Billet Lower Assembly Kit AR-9 80% Billet Lower Assembly Kit

    AR-9 80% Billet Lower Assembly Kit

    Our new and improved billet AR-9 80% lower, in a full lower build kit! Our new and improved AR-9 80% lower now comes available with a full lower build kit! Includes an LPK, 9mm buffer kit, and SBA-3 brace! Featuring an updated design with better...

    $269.99 - $279.99
  • Sale
    Glock® Compatible 6.0 lb Trigger Spring – Gen 1-4

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

    You've decided your gen 1-4 double-stack Glock® Compatible pistol's trigger performs well enough; you just wish it was a touch smoother and maybe a tiny bit lighter. Good, we can help you out with the Glock® Compatible 6.0 lb Trigger Spring for...

    Was: $3.99
    Now: $1.97
  • Sale
    AR10/AR15 Carbine Length Gas Tube

    AR10/AR15 Carbine Length Gas Tube

    Every gas-operated AR with a carbine-length system needs a gas tube of matching length. This is that gas tube. It's compatible with AR-15 and LR-308 / AR-10 sized rifles. See below for more info. Features: Stainless Steel Gas Tube for AR15 & AR10...

    Was: $11.99
    Now: $4.97
  • Sale
    Glock® 43 Compatible Black Slide 4 Glock® 43 Compatible Black Slide 1 Glock® 43 Compatible Black Slide 2 Glock® 43 Compatible Black Slide 3

    Glock® 43 Compatible Black Slide

    Gen 3 compatible. OEM specs, style, and fitment. This GLOCK® 43/43X-compatible slide features OEM specifications and a factory-equivalent fit and finish, making it an ideal replacement or upgrade for your G43, G43X or Polymer80 build. This slide's...

    Was: $139.99
    Now: $109.97
  • Sale
    PSA 9MM SBA3 MOE EPT Pistol Lower Assembly Kit 1 PSA 9MM SBA3 MOE EPT Pistol Lower Assembly Kit 2 PSA 9MM SBA3 MOE EPT Pistol Lower Assembly Kit 3 PSA 9MM SBA3 MOE EPT Pistol Lower Assembly Kit 4 PSA 9MM SBA3 MOE EPT Pistol Lower Assembly Kit 5

    PSA 9MM SBA3 MOE EPT Pistol Lower Assembly Kit

    Why waste time choosing each part for your AR9's lower? This lower build kit includes all the parts you need to assemble your fabricated AR9 80% lower or retail-bought 9mm stripped lower. Note: Due to ATF rule 2021R-08F, any pistol with a stabilizing...

    Was: $199.99
    Now: $164.97
  • Sale
    AR15 Pin & Detent Parts Kit

    AR15 Pin & Detent Parts Kit

    The KAK Industry AR15 Pin & Detent Parts Kit is made out of the best parts on the market. This kit is great for replacement parts, a new build, or having spare parts. This kit includes: a pivot pin takedown pin pivot and takedown detents hammer and...

    Was: $19.99
    Now: $16.97
  • Sale
    Holosun Red Dot Reflex Sight (Solar) - X2 MRS Holosun Red Dot Reflex Sight (Solar) - X2 MRS 2 Holosun Red Dot Reflex Sight (Solar) - X2 MRS 3 Holosun Red Dot Reflex Sight (Solar) - X2 MRS 4 Holosun Red Dot Reflex Sight (Solar) - X2 MRS 5

    Holosun 507C Red Dot Reflex Sight (Solar) - X2 MRS

    The Holosun 507C X2 Solar Micro Red Dot Sight is one helluva reflex optic that sports a ruggedized, waterproof, all-aluminum housing and incredibly durable multi-coated glass. Its price point and features allow this affordable but tough lil' pistol red...

    Was: $299.99
    Now: $289.97
  • Sale
    Tap Magic EP-Xtra® Cutting Fluid (4oz)

    Tap Magic EP-Xtra® Cutting Fluid (4oz)

    Lubrication required for your 80% jigs. If you're cutting and drilling any aluminum 80% lower or frame, you need appropriate cutting fluid. No, regular old WD-40 won't do. Tap Magic EP-Xtra Cutting Fluid provides proper lubrication, chip control, and...

    Was: $9.99
    Now: $6.97
  • Sale
    Magpul QD Sling Swivel

    Magpul® QD Sling Swivel

    The Magpul QD Sling Swivel is a detachable manganese-phosphate coated steel design, that is compatible with any push-button 1-1/4 inch webbing for QD sling attachment points, including the two-point MS1 Sling.  Additional Features: Platform: AR15,...

    Was: $13.99
    Now: $10.97
  • Sale
    Magpul MOE+® Grip – AR15/M4

    Magpul® MOE+® Grip - AR15/M4

    The Magpul MOE+ Grip has a reinforced rubber mold wrapping around the polymer body, allowing for maximum comfort and weapon control. The durable material prevents snags and damage, permitting peak performance in rugged environments. The MOE+ Grip...

    Was: $22.75
    Now: $19.97
  • Sale
    r-j-single-stage-drop-in-trigger-1 r-j-single-stage-drop-in-trigger-2 r-j-single-stage-drop-in-trigger-3 r-j-single-stage-drop-in-trigger-4 r-j-single-stage-drop-in-trigger-5

    Single Stage Drop-In Trigger

    Look, everybody knows you need a trigger to make your AR do its job. And while all those mil-spec triggers out there that come in who knows how many lower parts kits do their job adequately, that's just it. They're just "adequate." Time to step it up and...

    Was: $159.99
    Now: $94.97
  • Sale
    Magpul® Flip-Up Sight - Rear Magpul® Flip-Up Sight - Rear

    Magpul® Flip-Up Sight - Rear

    MagPul Backup Sights are a necessity for any and all AR-15 and M16 weapons. Having the dependability of a backup sight in case your optics system goes down, is imperative for field operators and general gunmen alike. These Rear Flip-Up Sights are a great...

    Was: $54.99
    Now: $36.97
  • Sale
    Ghost Complete Trigger Kit - Pro 3.3

    Ghost Complete Trigger Kit - Pro 3.3

    So you've decided to build your own double stack Glock® compatible pistol. You have a size whatever, gen whatever. And you know something about triggers beyond just hearing "you need these parts" and then blindly just using the trigger parts that...

    Was: $44.95
    Now: $39.97
  • Sale
    Real Avid Smart Bench Block - Universal Real Avid Smart Bench Block - Universal 2 Real Avid Smart Bench Block - Universal 3 Real Avid Smart Bench Block - Universal 4 Real Avid Smart Bench Block - Universal 5

    Real Avid Smart Bench Block - Universal

    When you work on either your AR or the smaller parts of your 1911 or a similar handgun, you could find yourself needing an extra pair of hands to hold something in just the right way so you can hammer a pin. You don't just want to clamp your barrel,...

    Was: $14.99
    Now: $8.97
  • Sale
    AR15 Upper Vise Block AR15 Upper Vise Block 2

    AR15 Upper Vise Block

    Get an extra set of hands when you work on the top half of your AR with an AR-15 Upper Vise Block. This solvent-resistant polymer-constructed vise block holds your AR's upper assembly securely in your vise without marring or scratching it, so you can...

    Was: $9.99
    Now: $6.97
  • 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

    The Mag Some of us know exactly how many rounds we have left at all times. For the rest of us, now there's help, especially if you carry a G43. This is the ETS G43 7-Round Magazine with Pearce Grip Extension. Now whenever you take your G43 out for a day...

    Was: $29.99
    Now: $19.97
  • Sale
    Magpul M-LOK® QD Sling Mount Magpul M-LOK® QD Sling Mount 2 Magpul M-LOK® QD Sling Mount 3 Magpul M-LOK® QD Sling Mount 4 Magpul M-LOK® QD Sling Mount 5

    Magpul® M-LOK® QD Sling Mount

    The Magpul M-LOK QD Sling Mount is made from durable Mil-Spec anodized aluminum that is lightweight. This anti-swivel design offers beveled edges, preventing snagging and rotation. The M-Lok QD Sling Mount provides a forward attachment point compatible...

    Was: $18.99
    Now: $11.97
  • Sale
    Double Diamond Connector - BLACK YIKES 3.0 Double Diamond Connector - BLACK YIKES 3.0 2

    Double Diamond Connector - BLACK YIKES 3.0

    If you're building your Glock® compatible pistol and you've gotten to the part of the process where you install parts that make up a functioning trigger, stop for a sec. What kind of feel do you want your trigger to have? I ask, because let's face...

    Was: $27.99
    Now: $19.97
  • Sale
    Magpul® MOE+® AR15/M4 Grip Magpul® MOE+® AR15/M4 Grip Magpul® MOE+® AR15/M4 Grip

    Magpul® MOE+® AR15/M4 Grip

    Magpul® has built quite a name for themselves over the years with their aftermarket AR platform furniture and add-ons. Take their MOE® grip for your AR. It feels great, the grip angle is miles ahead of the standard A2 grip your AR probably came...

    Was: $24.95
    Now: $19.97

We always update this page with our latest and great products, on sale today! Part of our commitment to you at 80-lower.com includes promising the lowest possible prices on 80 lower receiver units, AR-15 uppers, bulk purchases, 80 lower jigs, sights and scopes, accessories, and much more.

80% Lowers on Sale

Grab an O.G. forged 80% lower with an anodized finish for the lowest possible price online, anywhere! This lower has been built to exact mil-spec measurements, guaranteeing compatibility with other retail AR-15 parts.

Discounted Build Kits Available Now

Looking for a complete build kit, but don't want to spend an arm and leg? We didn't forget about you. Our Ultimate Premium AR-15 Rifle Kit is currently on sale, as well as our 5" Government Black 1911 Build Kit in 9mm!


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 80-Lower.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.

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.