The Streamlight ProTac Rail Mount HP-X Pro System features a maximum output of 1000 lumens. This weapon-mounted light is designed to securely attach to your firearm using a universal rail mount. The package includes everything needed for installation and operation, including two CR123A lithium batteries and mounting hardware.Key FeaturesIncluded Batteries: Comes with two CR123A lithium batteries for immediate use.Mount Style: Utilizes a universal rail mount for versatile compatibility.Construction Material: Made from aircraft-grade aluminum for durability.Waterproof Rating: Designed to be waterproof for reliable performance in various conditions.Other Features: Includes a long-range tactical light, M-LOK mount with Allen wrench, and a jack cap tail switch for easy operation.