Our AR15 laser engraved ejection port cover will fit Mil-Spec AR15 upper receivers, and can be used with an assortment of calibers. Choose between an assortment of engraved port covers that have popular sayings and artwork or have us create a custom cover for you. The single-sided ejection port cover laser engraved design is shown in open position only while the double-sided ejection port cover show in both open and closed position. Our Molon Labe AR-15 ejection port covers make a perfect replacement for the plain factory ejection port cover. All design work and laser engraving are performed at the Molon Labe® facility in Arizona. Our port covers are Made in the USA.