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On Sale

  • 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 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
    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
    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
    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
    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
    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
    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
  • Sale
    Ergo Grip, Tactical Deluxe SureGrip for AR-15/M-16

    Ergo Grip Tactical Deluxe SureGrip for AR-15/M-16

    If you're like the rest of us, you find the mil-spec A2 grip that came standard on your AR severely lacking in the area of comfort. Its hard plastic never really gets comfortable, and its angle and texture don't stop your from getting fatigue, especially...

    Was: $59.99
    Now: $39.97
  • Sale
    Gun Nuts®  0# $#!+ Kit - Lower Parts Kit Gun Nuts®  0# $#!+ Kit - Lower Parts Kit Gun Nuts®  0# $#!+ Kit - Lower Parts Kit Gun Nuts®  0# $#!+ Kit - Lower Parts Kit

    Gun Nuts® 0# $#!+ Kit - Lower Parts Kit

    Lost that tiny lil' spring? You're in the right place. The "OH $#!+" Lower Parts Kit provides replacement components for the AR-15 lower receiver's springs, pins, and detents -- including all the parts most likely to get lost or damaged during the...

    Was: $11.99
    Now: $8.97
  • Sale
    Glock OEM Front Screw-on Night Sight Glock® OEM Front Night Sight 2 Glock® OEM Front Night Sight 3 Glock® OEM Front Night Sight

    Glock® OEM Front Night Sight

    Genuine GLOCK® OEM front night sight. Simple. 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 effective...

    Was: $44.99
    Now: $23.97
  • Sale
    Rifle-Length Gas Tube

    Rifle-Length Gas Tube

    The perfect gas tube for a gas-operated AR with a rifle-length system. This tube is compatible with AR-15 and AR-10 sized rifles. See below for more info. Features: Stainless Steel Rifle Length Gas Tube for AR15 & AR10 rifles Rifle length 15...

    Was: $11.99
    Now: $3.97
  • Sale
    Magpul MOE-K2+® Grip – AR15/M4 Magpul MOE-K2+® Grip – AR15/M4-2

    Magpul® MOE-K2+® Grip - AR15/M4

    The Magpul MOE-K2+ Grip has a durable rubber mold wrapping around the hard polymer body, preventing snags and damage, which allows this grip to outlast in rugged environments. The MOE-K2+ offers a steeper vertical grip angle allowing the shooter's hand...

    Was: $23.70
    Now: $17.97
  • Sale
    PSA MOE SBA3 Lower Assembly Kit 1 PSA MOE SBA3 Lower Assembly Kit 2 PSA MOE SBA3 Lower Assembly Kit 3 PSA MOE SBA3 Lower Assembly Kit 4 PSA MOE SBA3 Lower Assembly Kit 5

    PSA MOE SBA3 Lower Build Kit

    Whether you're getting your stripped lower receiver ready to build an AR-15 pistol or just want to change things up and convert your SBR into a pistol, we've got just the kit for you. With the all-inclusive SBA3 lower assembly, you'll receive parts from...

    Was: $179.99
    Now: $149.97
  • Sale
    Magpul 5-Slot M-LOK® Aluminum Rail

    Magpul® 5-Slot M-LOK® Aluminum Rail

    You painstakingly picked out your favorite M-Lok handguard for your new AR build, but there's a catch: maybe the vertical grip, light mount or laser mount you have in mind to use on your handguard is made to attach to a 1913 / pic rail like that of an M4...

    Was: $18.95
    Now: $9.97
  • 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: $99.99
    Now: $94.97
  • Sale
    Bravo Company AR-15 Trigger Assembly - PNT, Nickel

    Bravo Company AR-15 Trigger Assembly - PNT, Nickel

    It's time to get serious about your AR's trigger. Two words: Bravo Company. And this is their PNT Trigger Assembly. Sure it's been given a nickel finish, but that's not all. The interacting surfaces of its individual parts have also been coated in PNT,...

    Was: $69.95
    Now: $53.97
  • Sale
    12-m-lok-free-floating-handguard-1 12-m-lok-free-floating-handguard-2 12-m-lok-free-floating-handguard-3 12-m-lok-free-floating-handguard-4 12-m-lok-free-floating-handguard-5

    12" M-Lok Free-Floating Handguard

    Need some "front end" to finish off that AR build of yours? How 'bout 12 inches of it? Put the finishing touches on your standard-sized AR-15 with this handguard. You get enough rail space on top to mount your backup sights or even optics. The M-Lok...

    Was: $69.99
    Now: $49.97
  • Sale
    Glock® 17 Compatible Slide w/ Rear Serration - FDE 4 Glock® 17 Compatible Slide w/ Rear Serration - FDE 1 Glock® 17 Compatible Slide w/ Rear Serration - FDE 2 Glock® 17 Compatible Slide w/ Rear Serration - FDE 3

    Glock® 17 Compatible Slide w/ Rear Serration - FDE

    Gen 1 to 3 compatible. OEM-spec internals with rear serrations. Cerakoted FDE. This GLOCK® 17-compatible slide features a slick bullnose profile with improved, multi-directional front and rear serrations providing improved grip. This slide's also cut...

    Was: $139.99
    Now: $109.97
  • Sale
    ALG Defense QMS Quality Mil-Spec Trigger

    ALG Defense QMS Quality Mil-Spec Trigger

    Some of us like our AR platform rifles traditional or built as close to mil-spec as possible. We build replicas of that Colt model 629 or of the old-school M-16, because we want that nostalgia when we shoot. There's just one problem: the mil-spec...

    Was: $68.25
    Now: $54.97

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.