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AR Rifle Kits

36 of 36 Items
36 of 36 Items
Available in 5.56 NATO/.223 Remington, 300 Blackout, and .308 Winchester.
 
Our 80% AR 15 Kits are designed and packaged for you to get almost everything you need to build your own custom AR-15 from the ground up! These kits are also one of the most cost-effective and budget-friendly ways to either start your arsenal or add to it.
 
Some states have banned 80% lowers and certain firearm parts or rifle kits, 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).

Why Build, Not Buy?

An AR 15 build kit is the easiest and most cost-effective route for you to build a custom AR-15. Like everything in our store, all of the components of our AR 15 Kits are made by hard-working Americans - right here on US soil. Why drive to big box store or buy a completed AR-15 (and pay a premium) when you can build it yourself? We make it easy, too. If you're new to the game, check out the intro guide below. If you already bought your rifle kit, all you need to do is install the lower parts kit once you buy and complete your 80% lower with a jig (both sold separately). Then hit the range!
 

Each AR 15 Kit Includes:

  • (1) AR-15 Barreled Upper Assembly
  • (1) Mil-Spec Lower Parts Kit
  • (1) Buffer & Buttstock
  • (1) Bolt carrier group w/ charging handle

Quality, Mil-Spec Rifle Parts

Our AR15 build 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 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.

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.

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