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.