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AR Lower Parts

  • 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...

    $17.96
  • Gun Nuts® Ambidextrous Sporter Lower Parts Kit Gun Nuts® Ambidextrous Sporter Lower Parts Kit Gun Nuts® Ambidextrous Sporter Lower Parts Kit Gun Nuts® Ambidextrous Sporter Lower Parts Kit

    Gun Nuts® Ambidextrous Sporter Lower Parts Kit

    Features a notched hammer and ambidextrous safety. Combine the best of old-school ARs with the ergonomics of a modern parts kit with the Sporter Ambi LPK from Gun Nuts. Features an original notched hammer, for compatibility with unshrounded bolt carriers...

    $105.99
  • Gun Nuts® Ambidextrous Pro Line Lower Parts Kit Gun Nuts® Ambidextrous Pro Line Lower Parts Kit Gun Nuts® Ambidextrous Pro Line Lower Parts Kit Gun Nuts® Ambidextrous Pro Line Lower Parts Kit

    Gun Nuts® Ambidextrous Pro Line Lower Parts Kit

    Precision machining, ambidextrous safety. The Pro Line Ambidextrous AR-15 LPK provides the best in American engineering, affording precision-cut fire control components that ensure the highest reliability out of the box. Coupled with an ambi safety,...

    $87.99
  • Gun Nuts® Pro Line Lower Parts Kit Gun Nuts® Pro Line Lower Parts Kit Gun Nuts® Pro Line Lower Parts Kit Gun Nuts® Pro Line Lower Parts Kit

    Gun Nuts® Pro Line Lower Parts Kit

    Precision machining for improved performance. The Pro Line AR-15 LPK provides the best in American engineering, affording precision-cut fire control components that ensure the highest reliability out of the box. Coupled with a consistent, smooth trigger...

    $72.99
  • Gun Nuts® Sporter Lower Parts Kit Gun Nuts® Sporter Lower Parts Kit Gun Nuts® Sporter Lower Parts Kit Gun Nuts® Sporter Lower Parts Kit

    Gun Nuts® Sporter Lower Parts Kit

    Features a notched hammer and precision-machined parts. Combine the best of old-school ARs with the ergonomics of a modern parts kit with the Sporter LPK from Gun Nuts. Features an original notched hammer, for compatibility with unshrounded bolt carriers...

    $93.99
  • 1911 AR Pistol Grip 1911 AR Pistol Grip 1911 AR Pistol Grip 1911 AR Pistol Grip 1911 AR Pistol Grip

    1911 AR Pistol Grip

    Give Your AR the 1911 Treatment. These are real, bona fide 1911 grips, complete with standard grip panel threaded inserts, made specifically for the AR platform! Anodized and available in Black, Gray, or OD Green, these grips are incredibly strong and...

    $64.99
  • Gun Nuts® Sporter Fire Control Group Gun Nuts® Sporter Fire Control Group Gun Nuts® Sporter Fire Control Group Gun Nuts® Sporter Fire Control Group

    Gun Nuts® Sporter Fire Control Group

    Features an O.G. Sporter Hammer, for unshrouded bolt carriers. Got an old Colt or Bushmaster bolt carrier group? Want a modern, reliable reproduction notched hammer? You've found the right kit: The Gun Nuts Sporter Fire Control Group features a replica...

    $40.99
  • Sylvan Arms AR-15 QD Backplate Sylvan Arms AR-15 QD Backplate

    Sylvan Arms AR-15 QD Backplate

    So you've seen the benefits of using a QD sling for your AR-15, and now you want to upgrade. You're on the right track, but where do you attach it, and what if you're left handed? If you prefer to keep your AR tight and close to your body, you'll want to...

    $19.99
  • 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...

    $264.99
  • MOE+® EPT SBA3 Lower Build KIt

    MOE+® EPT SBA3 Lower Build KIt

    If you want to build AR-15 pistol, you'll want the MOE+® EPT SBA3 Lower Build Kit. It's got everything you need to finish the lower receiver. This kit includes a Magpul® MOE+® grip and MOE® trigger guard, plus a lower parts kit with a...

    $199.99
  • Pistol Buffer Tube Kit - 3 oz Buffer

    Pistol Buffer Tube Kit - 3 oz Buffer

    Complete Your AR Pistol Build with the Perfect Buffer System Tuning your AR pistol for both supersonic and subsonic .300 Blackout loads requires precision—and the right buffer makes all the difference. This lightweight buffer kit features a 3...

    $29.99

 All the parts you need to get your AR's lower ready for an upper.

The piece-by-piece nature of building the AR-15 can get a little overwhelming, especially if it's your first time. That's why we've compiled all the AR-15 parts that you need to complete the "lower half" of your rifle or pistol. With a fully built lower assembly, you can attach a barreled upper receiver, slap in a magazine, and start hitting targets at the local range.

Parts Required to Finish Your AR's Lower

In addition to a fabricated 80% lower receiver or AR-15 stripped receiver bought from an FFL, you'll need the following components which can all be found right here:

  • Buffer tube
  • Buffer
  • Recoil spring
  • Butt stock or brace
  • Lower parts kit (includes hammer, trigger, safety, springs and pins)

New builder? Use our Master guide to pick the right lower parts.

Drop-in Trigger Upgrades

One of the easiest ways to upgrade your AR before you even finish your build is by simply swapping out your factory trigger setup for a drop-in unit, like the ones available from ACT and Rise Armament. These self-contained triggers include the trigger, disconnector, and hammer preinstalled. All you need to do is drop the unit into the receiver, and tap in your pins!

Need help with assembly? Here's how to install the AR-15 lower parts kit.

 


DISCLAIMER: “GLOCK” is a federally registered trademark of GLOCK, Inc. and is one of many trademarks owned by GLOCK, Inc. and GLOCK Ges.m.b.H. Neither 80% Lowers, a/k/a Tactical Gear Heads, LLC nor this site are affiliated in any manner with, or otherwise endorsed by, GLOCK, Inc. or GLOCK Ges.m.b.H. The use of “GLOCK” on this page is merely to advertise the sale of GLOCK pistols, parts, or components. For additional genuine GLOCK, Inc. and GLOCK Ges.m.b.H products and parts visit www.glock.com.


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.