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.
cc-gun-icon INCREDIBLY PRECISE
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.
cc-hand-icon RIDICULOUSLY EASY
We also offer our patented AR-15 and .308 Easy JigsĀ® 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.
cc-thumbs-icon 100% SATISFACTION GUARANTEED
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.

.308 & AR10 80 Lower Jig

What is an AR10 jig?

Jigs are fixtures that are very similar to a stencil which allows a builder to quickly and precisely remove the remaining 20% of material from an 80% lower receiver right from the comfort of their own home by using common household tools. In short, you can go from an AR10 80% lower, to a working AR10, without ever leaving your garage. Our 80% lower jigs are well known for their universal fitment and are capable of milling out .308 lower receivers as well as AR15, AR9, and AR45. 

WHAT DO I NEED TO MILL OUT AN AR10 80 LOWER?

All you need to mill out a lower receiver is a jig, lower, router, and tool kit! All of our jigs and tooling are designed to be used for years and they’re crafted from high-grade materials here in the USA. Our AR10 80% lower jigs are industry leading for ease of use and quality results.

We take extreme measures in our quality control process to make sure any 80% lower you manufacture using one of our Easy Jigs® will be made precisely to military specifications.

80% ARMS 308 LOWER RECEIVERS

Building an AR-10 using an 80% lower receiver is straightforward, it’s a fun weekend project for a firearms enthusiast like yourself! Our lower receivers are meticulously produced by our CNC machines to exact mil-spec tolerances to help ensure a quality build. Not only are our lowers the most universal out there with a DPMS Gen 1 pattern receiver, they're also all guaranteed for life, just like all of our products!