As easy to install as changing a car tire; No modifications are required to the weapon for installation; Mounts solidly to receiver using provided steel trigger pin and ejector replacement bolts; Non-marring backing plate will not damage the receiver's finish; Holds 12ga ammunition at a unique angle of 15 degrees to facilitate the speed of bottom loading the magazine tube or top loading of the chamber; Shotshells can be retained in base up or base down position depending on shooters style of reloading; Durable, oil resistant, replaceable shotshell retention system; Manufactured from 6061-T 6 aluminum; Type III hard anodized Black per Mil-Spec; Ergonomic design including lightening cuts for weight reduction