The 12Ga Shotgun Magazine Tube Tactical Tri Rail Mount is perfect for mounting picatinny rail accessories to your Winchester, Remington, or Mossberg shotguns and many more. This 12Ga Shotgun Magazine Tube Rail Mount is designed to fit onto most 1" diameter extended shotgun magazine tubes. When mounted onto your shotgun's extended magazine tube, this will allow you to attach multiple Weaver and Picatinny style accessories to your shotgun, like laser sights and tactical flashlights. This 12Ga Shotgun Magazine Tube Tactical Rail Mount is designed so that you can attach your laser sight and tactical flashlight at any of the 5 angles that the Shotgun Magazine Tube Tactical Rail Mount provides. You can mount your accessories not only at the standard 3, 6, and 9 o'clock positions, but also at the 4/5 and 7/8 o'clock positions. This 12Ga Shotgun Magazine Tube Tactical Rail Mount can also be used on any 1" round diameter accessories with (slide over clearance) like 1" scope tubes, flashlights, and laser sights. It mounts onto the shotgun magazine tube with the two provided Allen head bolts. Installation may require the user to disassemble the shotgun barrel, magazine tube, end cap, or clamp.