Surefire is a solid choice for tactical professionals. The body shape is also useful for maintaining a secure grip in cold or wet conditions, even when wearing gloves. Press the push-button tailcap switch for momentary operation and twist it for constant-on use. The Nitrolon housing is impact, corrosion, and temperature resistant and O-ring and gasket sealed for weatherproof performance, while the bezel is made of durable anodized aluminum with a polycarbonate lens. The specially developed reflector throws SureFire's wide, smooth beam with ample surround beam for peripheral vision.