The Streamlight ProTac Rail Mount HL-X Laser is a high-performance tactical gun light that pairs a 1,000-lumen white LED with a red laser on a rugged MIL-STD-1913 Picatinny rail mount, delivering reliable illumination and precise targeting in critical moments. Its innovative clamp design provides easy windage and elevation adjustments, ensuring laser sighting remains accurate regardless of mounted position, while a one-handed on/off and tighten interface lets you attach or detach the unit with your hands safely away from the muzzle. Built to withstand live-fire use, this weapon-mounted light is IPX4-rated for water resistance and operates across a wide temperature range from -20F to +120F, making it suitable for diverse environments. The ProTac HL-X Laser features momentary and steady on-off switches, offering flexible engagement options, and the advanced C4 LED technology produces 1,000 lumens with a runtime of about 1.5 hours on high and more than 20 hours on low, ensuring dependable visibility when it matters most. Serialized for positive identification, this laser-equipped, picture-perfect firearm accessory is designed for law enforcement, security, and personal defense, delivering performance and versatility as a trusted gun-mounted tactical light.