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On Sale

  • Sale
    Magpul® Flip-Up Sight - Front Magpul® Flip-Up Sight - Front

    Magpul® Flip-Up Sight - Front

    MagPul has been a staple among weapon owners for years, and these MagPul AR-15 Front Flip-Up Sights are following that tradition of high-quality products. These MBUS sights will easily fit onto most AR-15 or M16 Picatinny rail platforms. These Flip-Up...

    Was: $36.99
    Now: $24.97
  • Sale
    80% Lower Patriot Pack (AR-15, AR-9 & LR-308) AR-15 Forged 80 Lower AR-15 Forged 80 Lower AR-15 Forged 80 Lower AR-9 Billet 80 Lower

    80% Lower Patriot Pack

    Build all three ARs with one 80% lower combo kit. Originally chambered in 5.56 NATO and .223 remington, the AR has evolved to chamber different calibers, with upper and lower receivers redesigned to include the .308 AR-10, and the 9mm AR9. It can be hard...

    Was: $274.97
    Now: $229.99
  • Sale
    AR 15 Lower Assembly | Lower Parts Kit | Butt Stock | Buffer Tube | FIRE/SAFE | Forged | 80% Lower 1 AR 15 Lower Assembly | Lower Parts Kit | Butt Stock | Buffer Tube | FIRE/SAFE | Forged | 80% Lower 2 AR 15 Lower Assembly | Lower Parts Kit | Butt Stock | Buffer Tube | FIRE/SAFE | Forged | 80% Lower 3 AR 15 Lower Assembly | Lower Parts Kit | Butt Stock | Buffer Tube | FIRE/SAFE | Forged | 80% Lower 4 AR 15 Lower Assembly | Lower Parts Kit | Butt Stock | Buffer Tube | FIRE/SAFE | Forged | 80% Lower 5

    Forged Fire/Safe Marked 80% Lower Assembly

    No AR-15 build is complete without a butt stock assembly – and this one comes with all you need: Black FIRE/SAFE engraved 80% lower, lower parts kit, butt stock, buffer tube assembly. One (1) Black FIRE/SAFE 80% Lower Receiver: FIRE/SAFE...

    Was: $148.96
    Now: $129.99
  • Sale
    80% Lower - Fire/Safe Marked - Billet - Assembly Kit 80% Lower - Fire/Safe Marked - Billet - Assembly Kit 80% Lower - Fire/Safe Marked - Billet - Assembly Kit 80% Lower - Fire/Safe Marked - Billet - Assembly Kit 80% Lower - Fire/Safe Marked - Billet - Assembly Kit

    80% Lower - Fire/Safe Marked - Billet - Assembly Kit

    Our updated billet AR-15 billet 80% lower with a quality lower build kit. Grab a quality, mil-spec lower built to pair with your new 80% lower and save! This kit contains all components required to assemble the lower half of your custom AR-15 build in...

    Was: $173.96
    Now: $159.99
  • Sale
    Glock® 43 Compatible Lower Parts Kit

    Glock® 43 Compatible Lower Parts Kit

    If you're building a Glock® 43 compatible pistol, you're awesome, but you'll need a lower parts kit for it. We've got you. This Glock® 43 compatible lower parts kit is brought to you by KM Tactical. It includes everything you need to turn that...

    Was: $59.99
    Now: $42.97
  • Sale
    Flip-Up Mini AR-15 Front & Rear Iron Sights Flip-Up Mini AR-15 Front & Rear Iron Sights

    Flip-Up Mini AR-15 Front & Rear Iron Sights

    Want a pair of bomb-proof, rugged iron sights? Don’t want to spend an arm and a leg? Check out our mini flip-up front and rear sights! These little irons are machined from billet 6061 T6 aluminum, the same stuff the black rifle’s receiver is...

    Was: $39.99
    Now: $24.97
  • Sale
    Rise Armament RA-140 Super Sporting Drop-In Trigger Rise Armament RA-140 Super Sporting Drop-In Trigger

    Rise Armament RA-140 Super Sporting Drop-In Trigger

    The Affordable, Must-Have Trigger Most factory AR triggers are alright. They get the job done. Sort of. If you’re reading this, then your trigger probably feels gritty, sticky, and inconsistent and for a rifle that should punch out to over 400...

    Was: $129.99
    Now: $119.97
  • Sale
    Glock® 43 Compatible Pistol Build Kit w/ Black Slide 1 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

    Statistically, 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, the defender doesn't fire...

    Was: $299.99
    Now: $249.97
  • 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
    Magpul® Flip-Up Sights Front & Rear - AR-15 Magpul® Flip-Up Sights Front & Rear - AR-15 Magpul® Flip-Up Sights Front & Rear - AR-15 Magpul® Flip-Up Sights Front & Rear - AR-15 Magpul® Flip-Up Sights Front & Rear - AR-15

    Magpul® Flip-Up Sights Front & Rear - AR-15

    The best package MagPul has to offer comes in the form of this MagPul AR-15 Front and Rear Flip-Up Sight package. Both the front and rear sights are a heavy duty, impact resistant polymer plastic. Both the front and rear are easily adjusted and are of a...

    Was: $89.99
    Now: $61.97
  • Sale
    UTG® Quick Install Dust Cover -  .223/5.56,  Black UTG® Quick Install Dust Cover -  .223/5.56,  Black 2 UTG® Quick Install Dust Cover -  .223/5.56,  Black 3 UTG® Quick Install Dust Cover -  .223/5.56,  Black 4 UTG® Quick Install Dust Cover -  .223/5.56,  Black 5

    UTG® Quick Install Dust Cover - .223/5.56, Black

    Installing a dust cover onto your AR's upper receiver can be a pain. If you're starting with just parts, you need to install the C-clamp onto the rod without launching it across the room and never seeing it again. Then you thread the rod through the...

    Was: $9.99
    Now: $2.97
  • Sale
    AR-9 80% Billet Lower w/ Mil-Spec AR15 Lower Parts Kit AR-9 80% Billet Lower w/ Mil-Spec AR15 Lower Parts Kit AR-9 80% Billet Lower w/ Mil-Spec AR15 Lower Parts Kit AR-9 80% Billet Lower w/ Mil-Spec AR15 Lower Parts Kit AR-9 80% Billet Lower w/ Mil-Spec AR15 Lower Parts Kit

    AR-9 80% Billet Lower w/ Mil-Spec AR15 Lower Parts Kit

    Our new and improved billet AR-9 80% lower, with a quality lower parts kit! Grab our new and improved AR-9 80% lower with a mil-spec lower parts kit thrown in, and save on this bundle! Featuring an updated design with better aesthetics, a new magazine...

    Was: $139.99
    Now: $129.99
  • Sale
    Upper Parts Kit for Glock 43 Compatible & PF9SS Builds

    Upper Parts Kit for Glock 43 Compatible & PF9SS Builds

    If you're building a Glock® 43 compatible pistol, you're awesome, but you'll need an upper parts kit for it. We've got you. This Glock® 43 compatible upper parts kit comes with everything you need to get that Glock® 43 compatible slide up and...

    Was: $64.99
    Now: $54.97
  • 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

    Complete your GLOCK® 21 compatible PF45 frame (or upgrade your Gen 3 pistol) with this red dot-ready slide assembly. Its cut with the popular RMR footprint, and features front and rear serrations with a simple but rugged matte black finish. It's also...

    Was: $269.99
    Now: $249.97
  • Sale
    .308 Lower Assembly | Lower Parts Kit | Butt Stock | Buffer Tube |Billet 80% Lower 1 .308 Lower Assembly | Lower Parts Kit | Butt Stock | Buffer Tube |Billet 80% Lower 2 .308 Lower Assembly | Lower Parts Kit | Butt Stock | Buffer Tube |Billet 80% Lower 3 .308 Lower Assembly | Lower Parts Kit | Butt Stock | Buffer Tube | Billet 80% Lower 4 .308 Lower Assembly | Lower Parts Kit | Butt Stock | Buffer Tube | Billet 80% Lower 5

    .308 80% Lower Assembly

    Got your mind set on building your own AR10 Rifle? Then check out this lower assembly that features a .308 80% lower crafted from 7075-T6 aluminum billet and anodized black. It also includes a lower parts kit that has been laser cut and polished for a...

    Was: $208.96
    Now: $199.99
  • Sale
    Magpul®  MOE® Enhanced AR15/M4 Polymer Trigger Guard Magpul®  MOE® Enhanced AR15/M4 Polymer Trigger Guard Magpul®  MOE® Enhanced AR15/M4 Polymer Trigger Guard

    Magpul® MOE® Enhanced AR15/M4 Polymer Trigger Guard

    The Magpul® MOE® Enhanced Trigger Guard is a simple but effective customization that can improve your AR's lower. It provides more room in the trigger well for gloved fingers, and installation is simple: This guard doesn't require any punches or...

    Was: $8.99
    Now: $7.97
  • Sale
    AR15 Tapered Steel Crush Washer 1/2"x28 AR15 Tapered Steel Crush Washer 1/2"x28  2

    AR15 Tapered Steel Crush Washer 1/2"x28

    If you plan to go the traditional (and the easiest) route with the business end of your .223 or 5.56mm chambered AR by installing a muzzle device, you'll need a crush washer. This is that crush washer. You simply slide it onto the threading of your...

    Was: $1.59
    Now: $0.97
  • Sale
    Glock® 21 Compatible Lower Parts Kit

    Glock® 21 Compatible Lower Parts Kit

    Ready to assemble your PF45 or G21 frame? Grab this kit. This Gen 3 GLOCK® compatible lower parts kit is specifically designed for G21 pistols and Polymer80 PF45 frames. It features OEM-spec components to ensure reliability and an easy installation...

    Was: $74.99
    Now: $69.97
  • Sale
    AR15 Low-Profile Gas Block - .750" AR15 Low-Profile Gas Block - .750" 2 AR15 Low-Profile Gas Block - .750" 3

    AR15 Low-Profile Gas Block - .750"

    Every gas-operated AR (those that don't employ a piston system) needs a gas block of some type to cycle between shots. If you're building an old-school or retro style AR, it may have a fixed front sight that doubles as the gas block or some fold-up...

    Was: $14.99
    Now: $11.97

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.