The Streamlight 89015 ProTac Rail Mount HP-X Pro is a cutting-edge tactical weapon light meticulously designed for professional use, outdoor enthusiasts, and firearm owners who demand precision and reliability in every operation. Engineered with robust features and exceptional performance, this light is the ultimate tool for those who prioritize clarity, versatility, and durability in their equipment. The Streamlight 89015 boasts an impressive 800 lumens of bright white light, providing exceptional illumination in the darkest environments. Whether you're navigating a densely wooded area, patrolling in low-visibility conditions, or identifying potential targets at night, this powerful lumen output ensures that no detail goes unnoticed. Complementing this brightness is an astounding 105,000 candela, offering an incredibly focused beam that pierces through the darkness with remarkable precision. The light's beam delivers a stunning 648-meter beam distance, making it a go-to choice for long-range applications. This superior range allows users to identify objects and terrain features at an extended distance with unmatched clarity, which is crucial for hunters, tactical operators, and search-and-rescue teams alike. Whether you're working in close quarters or scanning the horizon, this light ensures that you always have a clear line of sight. The Streamlight 89015 easily fits long guns equipped with MIL-STD-1913 rails, providing a secure and stable mounting platform. This compatibility ensures that the light integrates seamlessly with most modern rifles, giving shooters a reliable and easy-to-install solution for tactical lighting needs. For users requiring additional flexibility, the light supports an optional M-LOK mount, expanding its adaptability to a wider range of firearms and accessories. This level of versatility ensures that the light meets the demands of a variety of tactical and recreational applications. Constructed to withstand harsh environments and rugged use, the light is IP67-rated waterproof when used without a remote pressure switch. This rating ensures complete protection against dust and immersion in water up to 1 meter for 30 minutes, making it ideal for operations in wet or dusty conditions. For users who require the added functionality of a remote pressure switch, the light maintains an impressive IP54 water-resistant rating, providing reliable performance in splashes and light rain.