SHOTGUN TRI-RAIL MOUNTING SYSTEM ADP-TRIR-140   MSRP $24.95 SPECIFICATIONS: COMPATIBLE FIREARMS: ANY 1 INCH DIAMETER TUBE COMPATIBLE TOOL: FSL OR LRS MATERIAL: ALUMINUM 6061, T6 WEIGHT: 2oz LENGTH: 1.5"     ADP-TRIR-140   Set up your tactical or home defense shotgun for maximum versatility and low light performance with this new Tri-Rail Mounting System. Lightweight and durable, this system positions three Picatinny rails at the front end of the shotgun where flashlights and/or lasers are best located. Easily mounted on the magazine tube of most popular 12-gauge pump shotguns, the Tri-Rail takes up under 1.5 inches of space ahead of the forearm. Made of tough aircraft grade aluminum with a matte black anodized finish, the Tri-Rail attaches in minutes with two machine screws.