Tacstar's sidesaddle mounts extra rounds on your shotgun in a convenient and accessible location for fast reloading.The polymer shell carrier is attached to an aluminum mounting plate that installs directly on the shotgun receiver.All mounting screws are included, no gunsmithing required.Note: some field grade shotguns may require a modification to the shotgun's forend.Shotguns using the tacstar pistol grip forend do not require modification.Shell Count: 6Type: Shotshell CarrierColor: BlackMaterial: Polymer w/Aluminum Mounting PlateSize: 6 RoundsModel: SideSaddleFinish: SmoothModel Fit: Rem 870, 1100, 1187Mount Type: ReceiverCaliber Or Gauge: 12 Gauge