The Streamlight TLR-1 HP Long Gun Weapon Light Kit 1000 Lumen Black delivers 1000 lumens of bright, reliable illumination for maximum target recognition and area lighting, with a wide beam pattern that reveals what is nearby and a 510-meter beam distance that extends your situational awareness in low-light environments. Built on 6000 Series machined aircraft aluminum with a black anodized finish, this rugged light is designed for harsh use and is IPX7-rated for waterproof operation, extensively live-fire tested for impact resistance, and weighs 4.32 oz at 3.39 inches in length, making it a compact, durable choice for long guns. It is powered by two CR123A lithium batteries and provides up to 1.75 hours of continuous run time, while a quick one-handed snap-on interface and ambidextrous momentary/steady On-Off switch enable fast, hands-free operation without placing the muzzle at risk. The kit arrives ready to mount on long guns with Glock-style rails and MIL-STD 1913 Picatinny rails, including keys for Glock-style, Beretta 90two, S&W 99, S&W TSW, and Sig P320 rails, ensuring broad compatibility across platforms. A dual-output capability includes a momentary strobe that can be disabled, and the product is Assembled in the USA with a limited lifetime warranty for lasting performance.