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Quality AR-15, AR-9 and AR-10 rifle kits available.

Our AR kits are packaged with everything you need to build a custom AR-15, AR-9, or AR-10/LR-308 rifle from the ground up, except for the firearm component: The stripped lower receiver (80% lowers are available as add-ons). Our build kits provide the most cost-effective way to own a quality AR-type rifle that includes only the parts you want -- minus the high prices you'll pay for a "name brand" rifle.

Why Build an AR Rifle Kit?

Why buy an off-the-shelf AR-15 and pay a premium, when you can build it yourself? Building your rifle allows you to choose only the parts and accessories you want. We make building your kit easy, too: Each kit's upper is assembled and ready to install on your lower out of the box. All you need to do is install the included lower parts kit in your fabricated 80% lower or stripped lower receiver (sold separately). Then hit the range!

Guide: How to Install The AR-15 Lower Parts Kit

Each AR Rifle Kit Includes:

  • (1) Barreled Upper
  • (1) Lower Parts Kit
  • (1) Buffer & Buttstock
  • (1) Bolt carrier group
  • (1) Charging handle

Customize your kit! Grab a sling and optic or iron sights.

Quality, Mil-Spec Rifle Parts

Our AR15 kits aren't just convenient. They're equal to or greater in quality than the typical "retail rifle". We partner with some of the nation's top gunsmiths and manufacturers to carefully piece together each build kit, ensuring MOA accuracy and utter reliability.

  • All barrels are forged from MIL-B-11595 E steel (4150 or Chromoly Vanadium)
  • All stainless barrels forged from Crucible 416R steel, offering sub-MOA accuracy
  • All BCGs are M16 in profile with chrome lining and properly staked gas keys
  • All stripped upper receivers forged from mil-spec 7075 T6 aluminum
  • All buffer assemblies and lower parts kits are mil-spec in fit and finish
  • All barreled uppers are test-fired to ensure proper assembly

Not sure about choosing carbon or stainless? Read the guide to AR barrels.

AR Rifle Kits: State Laws Vary

Some states have banned 80% lowers and certain firearm parts or rifle builds, or have otherwise restricted the sale and ownership of products we sell. So, be sure to check your local and state laws. We can’t ship our products to certain states. Please check our Shipping & Return Policy before placing an order (see restrictions).

Execute the right to bear arms today. Your build awaits you.


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.