The Unbranded AR M4A4 Upper Receiver is made from 7075 T6 aluminum forgings that are military grade and ready to go to work for your applications. These AR15 upper receivers by Unbranded are M4 feed ramped and hold true to the AR15 platform. This makes a perfect upper for your next modification or build out. The top of the receiver is left oversized so that you can use it as a lightweight barricade block or to hold a handguard or other accessories that you may need in the future. Compatible with most AR platforms, the Unbranded AR 7075 A4 M4A4 Upred Receiver is a high-quality piece that will help you create a top-quality firearm using some of the finest parts on the market, period.