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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 Jigs® which is the first 80% lower jig that makes it ridiculously easy for a non-machinist to finish their 80% lower.
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.

80% BLOGS

6.8 SPC vs 308 WIN: Which one is better?

6.8 SPC vs 308 WIN: Which one is better?

80 Percent Arms | Aug 12th 2021

If you’re looking into a new rifle build and you’ve already built or bought some chambered in .223 Remington or 5.56 NATO perhaps it’s time to set your sights on a different caliber. Today we’ll be...
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AR-10 vs AR-15: What's The Difference?

AR-10 vs AR-15: What's The Difference?

80 Percent Arms | Oct 29th 2019

The AR (Armalite-Rifle) platform is hands down the most versatile small-arms system in existence. Modular to the nth degree, you can chamber some pretty incredible calibers such as the .458 SOCOM, .50...
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​Upgrading your AR15 at Home

​Upgrading your AR15 at Home

80 Percent Arms | Oct 14th 2019

One of the coolest aspects about the AR15 platform is how incredibly modular it is. It is, without a doubt, the most modular and up-gradable small arms platform on the face of the planet. Most ever...
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Anodized vs Cerakote Lower Receivers

Anodized vs Cerakote Lower Receivers

80 Percent Arms | Oct 8th 2019

If you’ve ever shopped for an AR15, you have surely noticed the terms “anodized and cerakote”. It seems like these coating terms are important enough for manufacturers to mention, bu...
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Forged vs. Billet Lower Receivers

Forged vs. Billet Lower Receivers

80 Percent Arms | Oct 4th 2019

What should I choose, and Why? Since its inception in 1956, and civilian accessibility in early 1964; the AR15 platform has become a favorite for hunters, sport shooters, and outdoorsman...
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Most Recent Posts

6.8 SPC vs 308 WIN: Which one is better?

AR-10 vs AR-15: What's The Difference?

​Upgrading your AR15 at Home

Anodized vs Cerakote Lower Receivers

Forged vs. Billet Lower Receivers

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