With today's 20-gauge ammunition, the choice of viable defense shotguns has effectively doubled. The new M3020 Defense semi-auto augments the 20-gauge option through a series of highly desirable tactical features. Ghost-ring sights make precise target acquisition a snap, even in low-light conditions, while a receiver-mounted rail enables the use of a variety of optics. An additional accessory rail extends past the magazine cap, giving you the option to attach tactical accessories such as a flashlights or lasers.