The Mesa SureShell Polymer Side Saddle shotshell carrier features an integrated Trijicon RMR reflex sight mount designed specifically for Benelli M4 shotguns with 6-shell capacity for 12-gauge shells.Mesa SureShell Polymer Side Saddle Shotshell CarrierIntegrated Trijicon RMR Reflex Sight Mount (RMR sight NOT included)Fits Benelli M4 shotguns (also compatible with Benelli M2 and Beretta 1301)6-shell polymer configuration for 12-gauge ammunitionCo-witnesses with factory ghost ring sightsInjection molded glass-filled nylon yoke constructionType 3 hard coat anodized flat black finish on aluminum componentsMounts via drilled and tapped receiver holesPerfect for tactical applications and competitive shooting where quick shell access and optics integration are essential providing enhanced reload capability while maintaining sight picture consistency.