cc-settings-icon BUILD AT HOME
80% Arms sells AR-15 and .308 80% Lower Receivers, 80% Lower Jigs and other accessories which allow you to legally build a firearm at home in most states.
We utilize state of the art 5-axis CNC machines to mill all our .308 and AR-15 80 percent lower receivers to incredibly precise tolerances using premium billet aluminum.
We also offer our patented AR-15 and .308 Easy Jigs® which is the first 80% lower jig that makes it ridiculously easy for a non-machinist to finish their 80% lower in under 1 hour with no drill press required.
Products manufactured by 80% Arms carry a lifetime warranty against manufacturing defects. We will promptly replace or repair any product that we determine to be defective.

Bead Blasted Billet .308 80% Lower Receiver

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We received permission from the Federal Court to sell this item. State Restrictions apply. READ MORE.


For those that are looking for the aftermarket support of the AR15 but require a larger cartridge, we present our Bead Blasted AR10/.308 Lower. Our high-quality lowers are made using industry-leading CNC machines which create very tight tolerances.

To learn whether you should Anodize or Cerakote the lower, see our blog here!

Due to the lack of standardization, there are many different variants of the AR10/.308 platform, including our own AR10 80% lower receiver. Our 80% AR10 lowers follow the DPMS Gen 1 pattern which offers users the widest aftermarket support for your build.

We manufacture our 80% lower receivers with US-sourced aerospace grade 6061 aluminum. The material is more durable, resistant to corrosion, and yet much easier to mill than any other alloy.


  • DPMS Gen 1 Pattern Compatible

  • CNC Milled 6061 Aluminum Construction

  • Broached/Flared Magwell

  • Integrated Trigger Guard

  • Threaded Bolt Catch Screw Hole

  • Fire Selector Engraving

  • Completed Rear Takedown Lug Pocket

  • Full Mil-Spec Parts Compatibility

All of our billet lowers feature a threaded bolt catch pin hole. We do not include it with our AR10 lowers as they come standard with our AR10/.308 Lower Parts Kit. Already have a parts kit and need the screw? Buy our Bolt Catch Screw Kit!

*Please Note: Due to the bead blasting, the lower is not meant to be left as is and requires top layer finishing.

Consult the manufacturer of your AR10/.308 build components to ensure compatibility with our lowers. Palmetto State Armory’s PA10 components will not fit our lowers.

80 Percent Arms strives to provide the highest level of customer service within the 80% and the firearm industry as a whole. We support all of our products with a lifetime warranty* so you can build with confidence.

You can always expect prompt and educational information as customer satisfaction is our bread and butter. For any questions or concerns regarding our products, please contact us at either, (949) 354-2767, or message us via our live chat!

For more help and tips, be sure to check out our instructional videos on Odysee.

Shipping Restrictions: 

This item is restricted from shipping to the following: California, Colorado, Connecticut, Hawaii, Illinois, Maryland, Nevada, New Jersey, New York, Oregon, Philadelphia Pennsylvania, Rhode Island, Washington, Washington D.C.

 Under California law, this product is or contains an unserialized “firearm precursor part” and cannot be sold into the State of California. 80% Arms cannot accept any orders of this product for shipment to the State of California, or to any customer who is a resident of the State of California.