Mesa Tactical Saddle Mount with SureShell shtogun shell carrier for Remington 870/1100/11-87 (8-Shell, 12-GA, 8 1/2" Rail Length) Fits: Remington 870/1100/11-87 No fitting or gunsmithing is required to install. Holds 8-Shell, 12-GA 8 1/2" Rail Length