This is a Tactical Shotgun Rail Mount for the 12 Gauge and 20 Gauge Shotguns. Mount attaches to the Barrel or Magazine Tube. Perfect for mounting Dot sights, Lasers, Flashlights, Sling Points, and just about any other Weaver / Picatinny 1913 Rail Accessory. The Mount and Rails are fully Customizable. The Mount can be configured into a Dozen different configurations to suit the Shooter's requirements. All Aluminum Construction. Black Anodized finish. This mount is a robust, durable, ready-for-action rail system constructed out of black anodized aluminum. Optimized for red dots, flashlights, and lasers, Our Aluminum Rail prepares your shotgun for the range and your next hunting trip. Weight: 2.6 oz. Length: 1.6" Height: 1.75" Width: 1" Note: 2 inches of free space on the magazine tube is required to connect this mount.