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104 of 104 Items
  • 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 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
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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
  • CMMG 5.56 Muzzle Brake CMMG 5.56 Muzzle Brake CMMG 5.56 Muzzle Brake

    CMMG 5.56 Muzzle Brake

    If you're trying to get more control from your .223/5.56 rifle's barrel, it might be a good idea to swap out the A2 flash hider that probably came with your rifle with a compensator. A great option for you is the CMMG 5.56 Muzzle Brake. This particular...

    $69.99
  • AR-9 Bolt Carrier Group (Nitride) - 9mm

    AR-9 Bolt Carrier Group (Nitride) - 9mm

    You've meticulously picked out the parts needed for your new AR9 upper, and now you need  that final piece that is going to breathe some life into. Made in the USA, this AR9 Bolt Carrier Group is machined from 8620 Steel that ensures a high...

    $119.99
  • 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
  • AR15 Lower Parts Kit - CMMG AR15 Lower Parts Kit - CMMG AR15 Lower Parts Kit - CMMG AR15 Lower Parts Kit - CMMG AR15 Lower Parts Kit - CMMG

    AR15 Lower Parts Kit - CMMG

    CMMG is the industry leader in AR-15 lower parts kits. They’re known at first glance by their unique packaging with the yellow, red, blue and green bags. This simple but unique color coding assist you with the assembly of your 80% lower receiver...

    $49.99
  • 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
  • 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...

    $54.99
  • Magpul® MOE® AR-15 Build Kit Magpul® MOE® AR-15 Build Kit 2 Magpul® MOE® AR-15 Build Kit 3 Magpul® MOE® AR-15 Build Kit 4 Magpul® MOE® AR-15 Build Kit 5

    Magpul® MOE® AR-15 Lower Build Kit

    Welp, we outdid ourselves this time. This here's one helluva kit. Once you've grabbed a stripped lower (sold separately) this parts kit will provide the internals for that other half of your AR build. Finished. Finito. Completo. We added some mil-spec...

    $119.99
  • Sylvan Arms ARH300 Folding Stock Adapter Sylvan Arms ARH300 Folding Stock Adapter Sylvan Arms ARH300 Folding Stock Adapter Sylvan Arms ARH300 Folding Stock Adapter Sylvan Arms ARH300 Folding Stock Adapter

    Sylvan Arms Folding Stock Adapter (ARH300)

    Trick out your AR-15 by making it more easily stowable to carry with you to the range. Sick of carrying around huge bulky rifle bags and cases? Wish your rifle was short enough and small enough to fit into something smaller? Shorten it for travel with...

    $209.99
  • Magpul  MOE® Mil-Spec Carbine Stock Magpul  MOE® Mil-Spec Carbine Stock Magpul  MOE® Mil-Spec Carbine Stock Magpul  MOE® Mil-Spec Carbine Stock

    Magpul® MOE® Mil-Spec Carbine Stock

    There's a reason Magpul is amazing at what they do. Their parts are extremely rugged, just as tough if not tougher than mil-spec stuff, and they weigh a hell of a lot less. The Magpul MOE® Mil-Spec Carbine Stock is no different. It's light, it's...

    $39.95
  • 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,...

    $14.95
  • 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...

    $23.95
  • 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
  • Magpul AFG-2® - Angled Fore Grip

    Magpul AFG-2® - Angled Fore Grip

    The Magpul Angled Fore Grip (AFG-2) overall has a shorter length, width, and slimmer design than its predecessor, Magpul's original AFG. There is less recoil and more control using this fore grip since the shooter's hand is naturally placed in the center...

    $34.95
  • 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...

    $39.99
  • 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
  • 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
  • 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
  • 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
  • TROY 5.56mm Medieval Muzzle Brake TROY 5.56mm Medieval Muzzle Brake

    Troy Industries 5.56mm Medieval Muzzle Brake

    Get the most accuracy out of rapid fire situations the Troy Industries Medieval Muzzle Brake for 5.56mm AR platform rifles. Installation is easy and is just like installing your mil-spec A2 flash hider. Its multi-angled side ports help to keep your...

    $46.99
104 of 104 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 takeup and over-travel, 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.