The Streamlight 12 Gauge Tube Mount enables you to mount your favorite Streamlight illumination device to your shotgun. This innovative mount simply slips over the magazine extension of your favorite shotgun to hold your flashlight in place.This tube mount comes in an attractive black matte finish and is specifically designed for use with Streamlight's M3 and M6 tactical lights. Made from high-quality and durable materials, this mount will hold your flashlight steady in any situation for many years to come, all without adding significant weight to your weapon.