TacStar SideSaddle Mossberg 500/590 12 Gauge 4rd Black Polymer w/Aluminum Mounting Plate 1081167

Lightweight, molded-nylon shell carrier puts additional fire power quickly within your reach. Aluminum mounting plate attaches to the side of the receiver using the existing pin/screw holes—no permanent alterations or gunsmithing required. Four- and six-round models available for a variety of popular law enforcement shotguns. Rem. 870/1100/11-87 ESN has a convenient window in the mounting plate that leaves the weapon’s serial number exposed for viewing with the shell holder installed. Designed for armorers and law enforcement agencies who track their firearms by serial number for inventory, maintenance, and record keeping.