Leapers UTG Universal Single-rail Shotgun Barrel Mount 3 Slots Black. Leapers UTG Universal Shotgun / Paintball Single-Rail Barrel Mount is compatible with firearm barrels ranging from .75" to 1.1". Specifications for Leapers UTG Universal Single-rail Shotgun Barrel Mount: Manufacturer: Leapers UTG Fabric/Material: Aluminum Length: 1.6 in Width: 1.7 in Color: Black Weight: 1.8 oz Hand: Ambidextrous Gun Make: Universal Gun Type: Shotgun Quantity: 2 Finish: Matte Features of Leapers UTG Mount MNT BR003XLS: Allows for mounting accessories to your firearm Package Contents: Leapers UTG Universal Single-rail Shotgun Barrel Mount 3 Slots Leapers UTG Universal Shotgun/Paintball Single-Rail Barrel Mount 3 Picatinny Slots MNT-BR003XLS