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  • Adjustable Carbine Stock & Buffer Tube Assembly Adjustable Carbine Stock & Buffer Tube Assembly Adjustable Carbine Stock & Buffer Tube Assembly Adjustable Carbine Stock & Buffer Tube Assembly

    Adjustable Carbine Stock & Buffer Tube Assembly

    Whether you bought stripped lower, or just finished an 80% lower, you'll need two components to assemble it and make it functional: A lower parts kit, and a buffer tube assembly like this one. Buffer tube assemblies work with your lower parts kit,...

    $39.99
  • mil-spec-ar-15-butt-stock-1

    Mil-spec AR-15 Butt Stock

    The original M4-type buttstock. Aftermarket stocks are awesome, but some builders prefer the good ole' mil-spec stuff. This M4 six-position buttstock perfectly replicates the stock found on service-issued rifles. It's made from the same injection-molded...

    $13.99
  • Magpul® MOE® Carbine Stock & Buffer Tube Assembly Magpul® MOE® Carbine Stock & Buffer Tube Assembly 2 Magpul® MOE® Carbine Stock & Buffer Tube Assembly 3 Magpul® MOE® Carbine Stock & Buffer Tube Assembly 4 Magpul® MOE® Carbine Stock & Buffer Tube Assembly 5

    Magpul® MOE® Carbine Stock & Buffer Tube Assembly

    This partial AR-type lower build kit includes a buffer tube assembly and Magpul® MOE® Carbine Stock. These mil-spec-fit components work with standard AR lower receiver parts, including our available AR-15 80% lowers. What's Included Magpul®...

    $69.99
  • 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...

    $149.99
  • 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

    The Magpul MOE® Mil-Spec Carbine Stock is light, tough, and comfortable. Its shielded latch provides smooth action while preventing accidental adjustments to length of pull. Loosely based on the original M4 buttstock, this skeletonized version...

    $37.99
  • 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. Designed as a lightweight upgrade to the AR-15's original six-position adjustable stock, The Magpul CTR Stock provides the same...

    $56.95
  • Magpul PRS® GEN3 Precision-Adjustable Stock

    Magpul® PRS® GEN3 Precision-Adjustable Stock

    The Magpul PRS GEN3 Precision-Adjustable Stock is the ultimate shoulder rest for enhanced AR accuracy. With a built-in cheek riser, adjustable rubber pad for recoil mitigation, precision adjustment knobs, and mil-spec tube fitment, the PRS GEN3 allows...

    $242.20
  • SBA3 MOE Pistol Lower Build Kit

    SBA3 MOE Pistol Lower Build

    Looking for the perfect way to upgrade your AR pistol? Complete your AR-15 pistol build the right way with the SBA3 MOE Pistol Lower Build Kit! Features a quality pistol brace by SB Tactical and an upgraded lower parts kit. This SBA3 MOE Pistol Lower...

    $219.99
  • 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

    Once you've grabbed a stripped lower or 80% lower (sold separately) you'll need a parts kit like this one. It provides the internals for your receiver, making it functional. In addition to its mil-spec parts, this kit includes upgraded Magpul®...

    $134.99
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Finish or upgrade your rifle or pistol with a quality AR stock or pistol brace.

Enjoying good accuracy with your AR means investing in a comfortable AR stock or brace. We've got you covered with both configurations. Grab a standard M4-type, six-position buttstock for the classic look right here. We also carry upgraded buttstocks from Magpul, including their bench rifle-accurate PRS Gen 3 and their popular, do-it-all CTR Carbine Stock.

Want to build a portable PDW? We've sourced the unique Sylvan Arms Folding Stock Adapter, which allows you to collapse your AR's buttstock to a folded position alongside the receiver. This uniquely simple adapter requires no gunsmithing, and installs onto your existing receiver.

Grab a Brace For Your AR Pistol

The SBA3 Pistol Stabilizing Brace is a equality, affordable brace for any AR pistol. With a 5-position adjustable lever and wrist strap, the SBA3 is comfortable and affords better control and accuracy. We even have the brace available as part of our upgraded Magpul MOE pistol lower build kit. This kit includes all components necessary to transform your fabricated 80% lower or retail-bought stripped lower receiver into a ready-to-function lower assembly.

Every Stock and Brace Provides Mil-Spec Fitment

Virtually all modern AR platforms and components adhere to the typical mil-spec fitment, especially when it comes to our 80% lowers and just about every buffer tube on the market. That's why all stocks and braces we sell also provide mil-spec buffer tube fitment. They're all compatible with our rifle kits and pistol build kits, and all standalone buffer tubes and buffer kits we sell.

"Are pistol braces legal?"

Currently, under federal law, yes. Although ATF policy made change and require ARs equipped with pistol braces to be registered as NFA firearms, owning a brace is not a felony. Always follow local, state, and federal laws when it comes to configuring your AR-15 and never install components that would violate any gun laws. Be aware that the ATF is reviewing the legality of pistol braces, and may consider the installation of a pistol brace on an AR-15 pistol to instead be defined as a short-barreled rifle (SBR). Owning an SBR without an approved NFA application is illegal under federal law.

 


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.