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 "Semper Fidelis" laser-engraved on it.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 semper fidelis Mil-Spec ejection port door Mil-Spec heavy phosphate coating