The spike's tactical laser engraved ejection port doors are an easy and inexpensive way to personalize your ar-15.With so many choices available, it will take you longer to choose than it will to install.It is a mil-spec ejection port door constructed from stamped steel and it has a mil-spec phosphate coating.It comes with a laser-engraved punisher emblem.Finish: BlackType: Ejection Port DoorModel: Ejection Port DoorSize: AR-15Material: Steel