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

Should I Cerakote My AR?

Should I Cerakote My AR?

80 Percent Arms | Sep 8th 2021

If you have found an aftermarket service that can cerakote your AR-15 for an affordable price, then by all means go for it! Cerakote is one of the most popular coating methods used today on AR style r...
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AR9 LRBHO — Explained

AR9 LRBHO — Explained

80 Percent Arms | Sep 2nd 2021

What is ‘LRBHO?' The acronym stands for ‘ last round bolt hold open,’ which is the function that keeps the bolt carrier group within a gun locked rearward on an empty magazine after the last roun...
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AR-10/AR 308 Buffer Weights

AR-10/AR 308 Buffer Weights

80 Percent Arms | Aug 17th 2021

There’s a good amount of information out there online already when it comes to what buffer weights and springs you should use for AR-15s but not a whole lot of clarity when it comes to AR 10 buf...
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What is an AR-15?

What is an AR-15?

80 Percent Arms | Mar 3rd 2021

No, an AR-15 is not an assault rifle. It is not a fully-automatic weapon of mass destruction. And no, an AR-15 is not the scourge of humanity. Despite what many naysayers online would leave the uni...
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Most Recent Posts

Should I Cerakote My AR?

AR9 LRBHO — Explained

AR-10/AR 308 Buffer Weights

6.8 SPC vs 300 Blackout: Which Is Better For AR-15?

How to Build a 9mm AR: The Complete AR9 Pistol Guide

What is an AR-15?
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