NcSTAR 12G Shotgun Tri-Rail Weaver Mount For 1in. Mag Tube. This tube mount manufactured by the experts at NcSTAR features 5 different angled rails to mount accessories to. The NcSTAR 1" Shotgun Tri-Rail Weaver Mount mounts onto 12 gauge shotgun magazine extension tubes. With the NcSTAR 1in Shotgun Magazine Tube Mount you can mount flashlights and lasers to your shotgun. Specifications for NcSTAR 1" Shotgun Magazine Tube Mount: Manufacturer: NcSTAR Color: Matte Black Length: 1.4 in Condition: New Features of NcSTAR 1" Shotgun Magazine Tube Mount: 1" Shotgun Magazine Tube Mount Mounts onto 12 gauge Shotgun Magazine Extension tubes Allows the shooter to mount accessories to their shotgun like flashlight and lasers 5 different angled rails to mount accessories to. The standard 36 and 9 o'clock positions with the 4-5 & 7-8 o'clock Aluminum Construction Package Contents: NcSTAR 1in Shotgun Tri-Rail Weaver Mount NcSTAR MT12G: 12G Shotgun Tri-Rail Weaver Mount For 1in. Mag Tube