How to Build an AR-15 Upper Receiver
Building a standard AR-15 A2 Upper Receiver is pretty straightforward. Watch as Larry Potterfield, Founder and CEO of MidwayUSA shows how it’s done. Starting with an explanation of the tools required, from the action blocks to a barrel wrench, the use of each tool is explained in depth. The installation of the ejection port cover, forward assist, front and rear sights and barrel are all covered. In this build, a demonstration of how to check headspace is shown before assembling the bolt and carrier. Next, the delta ring is installed on the barrel and the barrel fastened to the upper receiver. Finally the installation of the gas tube and compensator are detailed.