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On Sale

  • 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 AR9 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: $354.97
    Now: $249.99
  • 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

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

    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: $159.96
    Now: $139.99
  • 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: $183.96
    Now: $174.99
  • Sale
    Blemished - 80% Lower - Fire/Safe Marked - Billet Blemished - 80% Lower - Fire/Safe Marked - Billet Blemished - 80% Lower - Fire/Safe Marked - Billet Blemished - 80% Lower - Fire/Safe Marked - Billet

    Blemished - 80% Lower - Fire/Safe Marked - Billet

    Blemished Black Billet 80% Lower This receiver is blemished. Surface marks will vary. The lower receiver is fully functional once fabricated, just like any unblemished 80% lower. NOTE: BLEMISHED LOWERS ARE FINAL SALES AND NON-REFUNDABLE...

    Was: $99.99
    Now: $79.99
  • 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
    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
    .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 - Billet - Assembly Kit

    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: $218.96
    Now: $199.99
  • 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
    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
    .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 - Billet w/ LR-308/AR-10 Lower Parts Kit

    Got your mind set on building your own AR10 Rifle? Then check out this lower build kit 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: $174.98
    Now: $164.99
  • 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
  • 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
    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
    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® 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
    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

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.