Mount Sight Kit N-Big Dot Mossberg 500/590/930

Caliber 12/76, Shotgun Mossberg Model 500, 590 and/or 930 with Ramp or Base on the Barrel for the Front Sight fits not OR-Optic Ready Models, Ghost Ring Rail Sight Set with Dovetail Ramp Front Sight Dot Green White Outlined, Ghost Ring Steel Sight height and side adjustable, mount aluminium black with weaver/picatinny style, with fastening screws and second aperture, 100% Made in USA, Code MB-4000R-3 XS Sights USA. Rework is perhaps necessary - professional installation recommended!