The Elzetta ZFH1500 Flashlight Mount fits any AR15, M16, and M4 rifle with a standard A1 or A2 front sight base (FSB). It accommodates cylindrical flashlights from 0.7 to 1.05 inches in diameter. This includes all Elzetta Flashlights. Made from high-strength high-temperature polymer, the ZFH1500 is lightweight (3 ounces) and durable, adds no width to the rifle, fits in standard vehicle racks and gun cases, and provides simple, intuitive ambidextrous operation. Available in Matte Black or Dark Earth (Tan). Made in the USA.