The Tippmann End Cap for use with the Tippmann US Army Series. If you need to replace this, consider getting a stock instead. All Custom 98 stocks will work on the Alpha Black and eliminate your need for this end cap.
This product is used in the following guns: Alpha Black Basic, Alpha Black Tactical, Alpha Black E-Grip Electronic, Alpha Black Tactical E-Grip Electronic, Bravo One Basic, Carver One, Project Salvo.
The Tippmann Part Number for this product is TA06006.