Wheeler Engineering Upper Receiver Action Rod AR-15 Black. The tool eliminates stress on the upper receiver when installing a barrel and works on all AR-15 barrels with standard barrel extensions. The rod also works on both forged and milled upper receivers and the design enables you to work on the upper with no need to remove your sights or optics. A simple twist and lock design makes it easy to hold the tool in place when working and a gas port index rod is included in the design. Specifications for Wheeler Engineering Upper Receiver Action Rod AR-15: Manufacturer: Wheeler Engineering Gun Model: AR-15 Color: Black Condition: New Last Chance: Yes Features of Wheeler Engineering Upper Receiver Action Rod AR-15 Locks Barrel and Receiver Together Package Contents: Wheeler Engineering Upper Receiver Action Rod AR-15 What firearm models does the manufacturer say Wheeler Engineering Upper Receiver Action Rod AR-15 is compatible with? The manufacturer suggests that Wheeler Engineering Upper Receiver Action Rod AR-15 is compatible with AR-15Wheeler Engineering 1100182: Upper Receiver Action Rod AR-15 Black