Rigid, aluminum, tri-rail mount lets you attach picatinny accessories such as lights, lasers, and other tactical equipment to your shotgun. Installs on the magazine tube without modifications to the gun, and will hold up to three attachments. Low mounting point keeps lights and lasers in proper alignment with the shot pattern and prevents interference with iron sights. Secures with two 8⁄32'''' clamping screws. Models for most popular brands of tactical shotguns. Mfg: Lite Mount Technologies SPECS: 6061-T6 aluminum, matte black. 1-5⁄8'''' (4.2cm) long. 1'''' - Fits Winchester, Remington, and FN shotgun magazine tubes. 25mm - Fits Mossberg and Ithaca shotgun magazine tubes. 26mm - Fits Benelli and Franchi SPAZ shotgun magazine tubes.