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103 of 103 Items
  • Magpul MOE-K2® Grip – AR15/M4 Magpul MOE-K2® Grip – AR15/M4-2

    Magpul® MOE-K2® Grip - AR15/M4

    The Magpul MOE-K2 Grip offers a full size design that has a steeper vertical grip angle compared to the previous model, the MOE-K. With a steeper vertical grip angle allowing the shooter's hand to be positioned closer to the body, aggressive TSP texture,...

    $20.95
  • Magpul M-LOK® Hand Stop Kit

    Magpul® M-LOK® Hand Stop Kit

    The Magpul M-LOK Hand Stop Kit has a low profile, lightweight design for enhanced weapon control. The M-LOK index point has a forward stop that prevents the shooter's hand from shifting towards the muzzle or front sight assembly.  Additional...

    $24.95
  • 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,...

    $64.99
  • Strike Industries Enhanced Lower Parts Kit

    Strike Industries Enhanced Lower Parts Kit

    If you've got a worn out or mil-spec lower parts kit in your AR-15 that needs replaced, or if you just want to refresh the controls on your rifle, you need to get the Strike Industries Enhanced Lower Parts Kit. It'll rejuvenate your lower assembly and...

    $104.99
  • Magpul MS1® Sling - Black Magpul MS1® Sling - Black 2 Magpul MS1® Sling - Black 3 Magpul MS1® Sling - Black 4 Magpul MS1® Sling - Black 5

    Magpul® MS1® Sling - Black

    The Magpul MS1 two-point sling offers smooth rapid transitions when lengthening or shortening the sling to allow hands free shooting support or rifle carry. With the MS1 there are no loops, tails, or any hazards that may cause snagging. In testing, the...

    $34.95
  • Magpul PRS® GEN3 Precision-Adjustable Stock

    Magpul® PRS® GEN3 Precision-Adjustable Stock

    The Magpul PRS GEN3 Precision has Melonite finished steel shafts that prevent corrosion and wear, offering the ability to adjust the length of pull and the cheek piece via aluminum detent knobs. This stock includes a non-slip rubber butt-pad that reduces...

    $254.95
  • Magpul RSA® QD - Rail Sling Attachment QD Magpul RSA® QD - Rail Sling Attachment QD 2 Magpul RSA® QD - Rail Sling Attachment QD 3 Magpul RSA® QD - Rail Sling Attachment QD 4 Magpul RSA® QD - Rail Sling Attachment QD 5

    Magpul® RSA® QD - Rail Sling Attachment QD

    The Magpul RSA QD is a low profile, two point sling positioned at an angle for maximum comfort and easy accessibility to the push-button. The RSA QD provides a forward attachment point compatible with other QD swivel system slings and the Magpul MS4...

    $29.95
  • Aero Precision Gamma 556 Muzzle Brake Aero Precision Gamma 556 Muzzle Brake

    Aero Precision Gamma 556 Muzzle Brake

    If being quick with follow-up shots from your AR-15 counts, you'll want either a muzzle brake to control recoil or a compensator to reduce muzzle rise. The good people at Aero Precision want you to have both, in one single device. This is the Gamma 556...

    $69.99
  • Midwest Industries Muzzle Brake for AR Rifles

    Midwest Industries Muzzle Brake for AR Rifles

    If managing recoil for your AR is your primary concern, you'll want a muzzle brake that does the utmost to mitigate it. The Midwest Industries Muzzle Brake does just that. Throw compensation and hiding your flash to the wind, and get the most recoil...

    $39.99
  • Magpul XTM® Enhanced Rail Panel

    Magpul® XTM® Enhanced Rail Panel

    You mounted all your accessories on your handguard's pic rails exactly where you want them. Everything feels good, except the still-exposed sections of rail on your handguard. They're no fun at all when they dig into your hand. Magpul brings you the...

    $7.95
  • Spike's Tactical Lower Parts Kit for .223/5.56

    Spike's Tactical Lower Parts Kit for .223/5.56

    The mil-spec lower parts kit is good enough. It does the job it's meant to do. The trigger, hammer, disconnector, detents, springs, and roll pins are perfectly suited to the job of making your lower (and the rest of your AR) work as intended. In keeping...

    $89.99
  • Midwest Industries 2-Chamber Muzzle Brake Midwest Industries 2-Chamber Muzzle Brake

    Midwest Industries 2-Chamber Muzzle Brake

    The AR-15's A2 "birdcage" flash hider really is a great design. It dissipates expelled gas, usually in five directions, pointed in several upward and side-facing paths. It keeps your visual path to the target clear, so you can quickly re-level your aim...

    $49.99
  • Magpul MIAD Mission Adaptable Grip Magpul MIAD Mission Adaptable Grip

    Magpul® MIAD Mission Adaptable Grip

    Got a preference for how you think an AR grip should feel? Yeah, anything but the original mil-spec grip, right? We hear ya. Fortunately, Magpul heard ya too. That's why they have the MIAD, the Mission Adaptable grip for your AR. It's just as great as...

    $34.99
  • Spike's Tactical Pro Grip Spike's Tactical Pro Grip-2

    Spike's Tactical Pro Grip

    Replace that mil-spec uncomfortable grip on your AR with the Pro Grip by Spike's Tactical. It has an ergonomically correct feel and has been shaped and contoured to fit your hand's natural grip, to make your hand and your rifle fit together like they're...

    $24.99
  • Rise Armament .223/5.56 RA-701 Compensator Rise Armament .223/5.56 RA-701 Compensator

    Rise Armament .223/5.56 RA-701 Compensator

    Want to completely eliminate muzzle rize? Reduce felt recoil by 67%? Add a badass-lookin' muzzle device on your AR-15 in the process? You can check all three boxes and keep some cash in your wallet with Rise Armament's affordable RA-701 Compensator. This...

    $89.99
  • Phase 5 Weapon Systems 5/8 x 24 RH FATman Hex Brake Phase 5 Weapon Systems 5/8 x 24 RH FATman Hex Brake

    Phase 5 Weapon Systems 5/8 x 24 RH FATman Hex Brake

    If you're someone who does a lot of high-performance shooting, then you want to cut down on the recoil as much as possible while still maintaining a level barrel and thus your accuracy. The people at Phase 5 Weapon Systems know this full well. That's why...

    $144.99
  • Spike's Tactical R2 5.56 Muzzle Brake Spike's Tactical R2 5.56 Muzzle Brake Spike's Tactical R2 5.56 Muzzle Brake

    Spike's Tactical R2 5.56 Muzzle Brake

    Spike's Tactical gets it when it comes to reducing felt recoil for your AR-15. Sure the AR might not kick a lot to begin with, but for you that have AR pistols and generally shorter-barreled builds, the R2 from Spike's Tactical will work wonders. The R2...

    $74.99
  • Fortis Manufacturing, Inc. RED 5.56 Muzzle Brake Fortis Manufacturing, Inc. RED 5.56 Muzzle Brake Fortis Manufacturing, Inc. RED 5.56 Muzzle Brake

    Fortis Manufacturing Inc. RED 5.56 Muzzle Brake

    If you frequently put many rounds downrange with your .223/5.56 AR in rapid succession, you need to squeeze as much control out of your rifle as possible. One way to do this is to replace your mil-spec A2 flash hider with a muzzle brake. For exactly this...

    $89.99
  • Aero Precision Delta 556 Muzzle Brake Aero Precision Delta 556 Muzzle Brake Aero Precision Delta 556 Muzzle Brake

    Aero Precision Delta 556 Muzzle Brake

    On the spectrum from low recoil to less muzzle rise to less concussive blast and flash, you've decided your AR's recoil was manageable how it is. You've decided now to take the edge off the explosion you hear each time you send a round downrange. The...

    $54.99
  • Sale
    ar-15-fully-stripped-upper-receiver-1 ar-15-fully-stripped-upper-receiver-2 ar-15-fully-stripped-upper-receiver-3 ar-15-fully-stripped-upper-receiver-4 ar-15-fully-stripped-upper-receiver-5

    AR-15 Forged Stripped Upper Receiver

    Ready to piece together your own AR? Finished up your 80% lower or stripped lower and want to assemble your own upper receiver piece by piece? Start with quality: Grab one of our forged, mil-spec (7075-T6) "Flattop" stripped AR-15 upper receivers. This...

    Was: $69.59
    Now: $57.99
  • Magpul® Angled Foregrip - M-Lok

    Magpul® Angled Foregrip - M-Lok

    This MagPul M-Lok Angled Foregrip is a great addition to any AR-15 or M16 weapon. This AFG (Angled Foregrip) looks sleek compared to other handle options. Weighing in at just 1.2oz, including hardware, this grip is ideal for any and everyone. MagPul is a...

    $44.99
  • UTG Ultra Slim Angled M-LOK Foregrip UTG Ultra Slim Angled M-LOK Foregrip UTG Ultra Slim Angled M-LOK Foregrip UTG Ultra Slim Angled M-LOK Foregrip UTG Ultra Slim Angled M-LOK Foregrip

    UTG Ultra Slim Angled M-LOK Foregrip, Matte Black

    This Ultra Slim Angled MLOK Foregrip from UTG is constructed from 6061-T6 Aluminum and anodized with a matte black finish. It is compatible with M-LOK style rails, shrouds, and hand guards. This angled foregrip provides a very comfortable, forward grip...

    $29.99
  • Aero Precision AR15 Enhanced Carbine Buffer Kit Aero Precision AR15 Enhanced Carbine Buffer Kit Aero Precision AR15 Enhanced Carbine Buffer Kit

    Aero Precision AR15 Enhanced Carbine Buffer Kit

    You need a buffer tube assembly on your AR-15. And usually it's nothing "special." You screw parts onto other parts, and it serves its purpose as part of your AR. You spend your hard-earned money on these parts, so it'd be nice if they'd do more for you...

    $54.99
  • Magpul CTR® Carbine Stock – Mil-Spec Magpul CTR® Carbine Stock – Mil-Spec 2 Magpul CTR® Carbine Stock – Mil-Spec 3

    Magpul® CTR® Carbine Stock - Mil-Spec

    The Magpul CTR Carbine Stock has a light, anti-snag, A-framed design that protects the latch from accidentally releasing. The removable rubber butt-pad prevents slippage when pressed against the shoulder along with the CTR having a sloped cheek weld for...

    $59.95
  • Spike's Tactical - AR-308 Lower Parts Kit

    Spike's Tactical - AR-308 Lower Parts Kit

    The Spike's Tactical AR-308 Lower Parts Kit sports military-grade hardware (minus that third safety position) with a great fit and finish. This parts kit is manufactured for Spike's Tactical's forged sets and may not be compatible with any other large...

    $79.99
  • Aero Precision Gamma 7.62 Muzzle Brake Aero Precision Gamma 7.62 Muzzle Brake Aero Precision Gamma 7.62 Muzzle Brake

    Aero Precision Gamma 7.62 Muzzle Brake

    If being quick with follow-up shots from your LR-308 counts, you'll want either a muzzle brake to control recoil or a compensator to reduce muzzle rise. The good people at Aero Precision want you to have both, in one single device. This is the Gamma 7.62...

    $79.99
103 of 103 Items

Quality AR parts kits, triggers, receivers, handguards, BCGs, and AR-15 accessories.

Welcome to the parts counter. Need some roll pin punches to complete that LPK install? Or maybe you want to ensure your handguard's on snug and torqued to spec. Need to upgrade your new black rifle (or pistol) build with a better trigger, grip, or sights? We've got you covered. No 80% lower project is going to be easy without the right tools, so we sourced all the extra bits and components you'll probably need to make the job easier.

Triggers & Receiver Components

Once you've fabricated that shiny new 80% lower for your AR build (or even if you just bought a stripped lower), you've got to outfit it with all the components required to make it function: A trigger, hammer, disconnector, safety, and all those little springs and pins. Make it easy and remove the guesswork by checking out our selection of mil-spec AR lower parts for your .223, 9mm, or .308 80% lower receivers. We also carry a selection of pistol braces and buttstocks to throw on that naked buffer tube.

Need better groupings? The easiest way to upgrade your new AR build is with a drop-in trigger. We carefully selected some of the best units on the market. Any of these drop-in trigger units will reduce trigger pull and creep, minimize or even eliminate take-up and overtravel, and provide more consistent trigger pulls so you can land rounds more precisely. Best of all? They install easily and they're incredibly affordable. It's one of the first upgrades we recommend, especially if you're installing a lower parts kit.

Building an AR piece by piece? We've got you covered. Grab one of our mil-spec, forged, stripped uppers and a quality M16 bolt carrier group to get started. Pair it all up with a nice free-float, lightweight handguard and then all you need to do is pick a barrel to send rounds downrange. You don't have to purchase a complete build kit from us. We love supporting builders who choose to assemble their own uppers.

Grab Your Gunsmithing Tools, Too!

Ever try to install an LPK without punches? You probably wound up losing some of those tiny roll pins, halting your build. Get rid of the frustration and guesswork and grab the tools you need to confidently attack your 80% project. We've got quality Armorer's Wrenches, torque wrenches, roll pin kits, vise blocks, and all the other gunsmithing tools you need to go from a hunk or aluminum or polymer to a locked n' loaded shooter. Grab a complete Armorers Kit like the Wheeler set, and you'll have virtually all the tools required.

 


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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.