Nightstick Xtreme Tactical Light Compact, Handgun, 550 Lumens, Black – TCM-550XL. The Nightstick TCM-550XL-GL Compact Tactical Weaponlight is an ideal illumination solution for compact pistols featuring a combination of a powerful 550-lumen output and a factory-focused Total Internal Reflection (TIR) lens. This gives you a bright and smooth beam free of holes or hot-spots with a tight center cone of light and a generous spill. An ambidextrous momentary or constant-on activation switch makes its use intuitive and easy, and a separate lock-out function on the bezel disables the light completely to prevent accidental activation during transport and storage. The daylight-visible green aiming laser will assure you’re on target. Designed to fit compact pistols with integrated rails, the light comes with an adjustable rail mount and four sets of inserts to fit popular models from a variety of manufacturers. Nightstick engineered the light to be compact and lightweight, so it is compatible with most weaponlight holsters available from major manufacturers. Powered by a single included CR123 battery, the TCM-550XL offers more than 2 hours of constant runtime. Green aiming laser is visible day and night. Total Internal Reflection (TIR) lens system produces a smooth pre-focused beam without holes or hotspots. Versatile beam has a long throw with a generous spill to maintain situational awareness, and a large center spot of bright light. Type: Ambidextrous toggle switch. Momentary and constant-on activation. Push switch down for constant-on, push and hold for momentary. Lockout function on bezel prevents accidental operation. Compatible with most weaponlight holsters available from major manufacturers. Lightweight 6061-T6 aluminum alloy housing. Scratch and corrosion-resistant black Type III hard-anodized finish. IPX7 rated to be waterproof and submersible to 3.3′ (1m) for up to 30 minutes. Impact resistant, rated to 6.6′ (2m). Ideal for compact pistols with a length of just 2.5. Weighs just 2.5 ounces with battery. Runs on one included CR123 battery. Serial number for personal identification. Integrated rail mount with a set of rail-locating keys included to fit a variety of rails and pistols. Rails require at least one cross rail slot for proper installation and safe use. Set of rail inserts included to fit a wide variety of rail designs. Correct key installation allows the light to be installed close to the trigger guard with only a slight visible gap. Reducing the gap ensures proper fit in the user’s holster.