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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

Best RMR Sight for Handguns

Best RMR Sight for Handguns

80 Percent Arms | Jul 28th 2023

Whether you're a veteran shooter or a newcomer to the world of handguns, the concept of a pistol sight probably isn't foreign to you. More than just a fad, RMR sights have been steadily climbing th...
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Holosun vs Aimpoint - Which is better?

Holosun vs Aimpoint - Which is better?

80 Percent Arms | Jul 11th 2023

Technology within the wide world of firearms has taken leaps and bounds with the advancements made in rifle sighting equipment. Convenience plays a vital role as a new standard for optics, especially...
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How to Build a Custom P320

How to Build a Custom P320

80 Percent Arms | Feb 3rd 2023

The Sig Sauer P320 is a versatile and reliable handgun that is popular among law enforcement and civilian shooters. It features a striker-fired design and a modular trigger group that can easily be co...
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Should I get a fluted barrel?

Should I get a fluted barrel?

80 Percent Arms | Jan 17th 2023

Yes! Maybe.. The truth is it depends on if the barrel you're looking for is for a rifle or a pistol. The short of it is that if it's for a pistol, you're probably safe to go for it! If your new b...
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Best 80% Handgun Frames

Best 80% Handgun Frames

80 Percent Arms | Dec 7th 2022

Image above Photo Source: Tactical ToolboxIn recent times, the illustrious and highly revered AFT (or ATF, depending on who you ask) have attempted to make unfinished 80% lowers and handgun frames be...
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