LR-308 Rifle Kits

LR-308 Rifle Kits

You asked for ‘em, we’re delivering: Introducing our all-new LR-308 Build Kits! These .308 AR build kits are the perfect, affordable alternative to shelling out a ton of cash on a factory AR-10. If you want to hit steel at 500 meters and enjoy MOA accuracy without spending an arm and a leg, an LR-308 Build Kit is the ticket. We carefully select each component for our build kits to ensure optimal performance, rugged reliability, and affordable quality. All the components in our build kits are proudly manufactured in the U.S.A by top gunsmiths and feature mil-spec fittings and finishes.

Learn how to configure your LR-308 build, including performance and compatibility with the AR-10.

What’s Included

These LR-308 kits are compatible with DPMS .308 components. Each build kit includes a match-grade barrel and pre-built upper that’s ready to fire out of the box. Simply select the optional 80% lower to have a complete LR-308 build kit:

  • Complete .308 AR upper receiver
  • Match-grade barrel (1:10 twist)
  • M16 full-auto bolt carrier group
  • Mid- or rifle-length gas system
  • CMMG AR-10 lower parts kit
  • Optional 80 percent lower
  • .308 AR buffer assembly

Additional Specifications:

  • 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

Optional 80% lower

The optional 80% lower offered with each kit allows you to complete your build in a single day. All that’s required is a compatible AR-10/LR-308 jig. Nothing in any build kit - including the lower - is considered a firearm. Each kit ships straight to your front door with no FFL required. Please check your local and state laws before ordering. 

Benefits of Our LR-308 Build Kits:

  • Includes a complete AR in a box (w/ lower)
  • Not a firearm, no FFL required to purchase
  • Pair with optional 80% lower to complete build
  • Compatible with AR-10/LR-308 jigs
  • Kit ships straight to your front door
  • Manufactured and build in U.S.A
  • Backed by Lifetime Warranty

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.

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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, New Jersey, New York, Pennsylvania, 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.