This is a Tactical Shotgun Rail Mount for the 12 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. All Aluminum Construction. Black Anodized finish. This mount is strong, durable, ready-for-action rail system constructed out of black anodized aluminum. Optimized for red dots, flashlights, and lasers, Our Aluminum Rail for Shotguns gets your shotgun ready for the range and your next hunting trip. Length: 1" Height: 1.25" Weight: 8 oz.