The TLR-7 A includes a customized ambidextrous on/off rear switch in either a Low or High option to match your shooting style. It features a rail clamp that is designed to rapidly attaches/detaches quickly and safely with no tools and without putting your hands in front of muzzle. Securely fits a broad range of full-sized and compact guns. Durable, anodized machined aluminum construction and user enabled strobe function. Engineered optic produces a concentrated beam with optimum peripheral illumination. 2.58-Inch (6.55 cm) 2. 4 oz (68.1g).