The TCM-5B Subcompact Weapon-Mounted Light for Short Rail handguns produces 650 lumens from a single CR123 battery. Its unique rail clamp is designed specifically for narrow-rail subcompact pistols. An engineered TIR lens projects a tight bright spot for threat identification and confirmation that reaches 136 meters. The lens also produces a crisply defined outer halo for additional situational feedback.Key FeaturesLighting Modes: Features momentary-on and constant-on lighting modes, operated by intuitive rear-facing toggle switches on each side.Programmable Modes: Includes a user-programmable strobe mode and battery-safe mode for versatility.Construction: Made from aircraft-grade 6061-T6 aluminum with a polymer rear housing for durability.Included Battery: Comes with one CR123 Lithium battery for immediate use.Compatibility: Fits several models including Glock G43X MOS, Sig Sauer P365 X-Macro, and many more subcompact handguns.