Meprolight Tru-Dot Tritium Night Sights - Benelli M1S90, M4, Nova, Supernova (Post 2001)
Tritium Night Sight Set for the Benelli M1S90, M4, Nova, and Supernova Shotguns. Features a Ghost Ring Rear Sight and a Blade front Sight. The ML - 34302 are for later versions of the M3S90 Shotguns (After 2001). The rear sight is moved side-to-side by screw, which is visible from the right side of the winged housing.