This universal tactical shotgun flashlight mount-magazine tube mount fits 12 Gauge 1 inch diameter pump shotgun mag tube extension found on popular shotgun like Remington 870, Mossberg 500 and many other brands. This flashlight / laser mount is designed to allow you to attach multiple Weaver and Picatinny style accessories to your pump shotgun. This 12 Ga Shotgun magazine tube tactical rail mount is designed so that you can attach your Laser sight and Tactical Flashlight at any of the five angles that the shotgun magazine tube tactical rail mount provides. Not only can you mount your accessories at the typical 3, 6, and 9 o'clock positions; you can also mount the accessories in 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 sight. Mounts onto your shotgun magazine tube with the two provided Allen head bolts. Installation may require user to disassemble shotgun barrel, magazine tube, end cap and clamp.