The Spike's Tactical Ejection Port Door is an easy and inexpensive way to personalize your AR-15. It is a Mil-Spec ejection port door constructed from stamped steel and it has a Mil-Spec phosphate coating. This model features a laser-engraved Zombie Killer.We offer our standard ejection port door or if you want to customize your rifle we have a selection of custom engravings for you to choose from. Features: Engraved with zombie killer Mil-Spec ejection port door Mil-Spec heavy phosphate coating