Mounting 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 front sight not suitable for the OR-Optic Ready models, rail ghost ring mounting rail sight kit with dovetail ramp front sight dot night green white bordered, ghost ring sight steel adjustable in height and side, mounting rail aluminum black with Weaver/Picatinny style, with mounting screws and second ghost ring insert, 100% made in USA, code MB-4000R-3 XS Sights USA. Rework may be necessary - professional installation is recommended!