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 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.

Complete AR 15 Upper Receivers

WHAT IS A COMPLETE AR-15 UPPER RECEIVER?

Complete AR-15 upper receivers are pre-built upper receivers that are ready to slap on a finished AR-15 80% lower and start shooting right out of the box! Whether it's in .223 Remington, 5.56 NATO, or .300 BLACKOUT, this is a turnkey solution to finishing out your build. A complete upper receiver is made up of the upper receiver, a hand-guard or rail, dust cover, barrel, a flash hider, bolt-carrier group, and a charging handle. 

Why Buy A Complete AR-15 Upper Receiver?

These are convenient options for those who don't have the knowledge or tools to assemble these components on their own, or for those who don't have the time or desire to do it themselves. Nothing wrong with that! When building an AR-15 it is extremely important you know what you are doing to ensure your firearm will work normally and not experience any catastrophic failures, and the majority of people tend to buy complete upper receivers for their first couple rifles.