Adjustable weaver/picatinny tactical sight sets for most famous brand semiautomatic and pump shotguns such as Beretta, Benelli, Mossberg, Browning, Winchster, Ithaca etc. with barrel diameters ranging from .819″ to .842″ (20,80 mm to 21,40 mm) for standard shotguns and .858″ to .882″ (21,80 mm to 22,40 mm) for heavier gauges.
Base BAR11W + Diopter D4 + Ramp SG4 + Front sight M1B + Blister