Bayco Sub-Compact 650 Lumens Weapon-Mounted Light for Narrow Rail Handguns LED. Its unique rail clamp is designed specifically for narrow-rail / short-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. The TCM-5B features completely ambidextrous and intuitive rear-facing toggle switches on each side of the light to operate the momentary-on and constant-on lighting modes. A user-programmable strobe mode and battery-safe mode are available when needed. Constructed from aircraft-grade 6061-T6 aluminum with a polymer rear housing the light comes with one CR123 Lithium battery. Specifications for Bayco Sub-Compact 650 Lumens Weapon-Mounted Light for Narrow Rail Handguns: Manufacturer: Bayco Light Output: 650 lumens Bulb Type: LED Battery Type: CR123 Color: Black Gun Model: Heckler & Koch HK45 Length: 2.5 in Weight: 2.25 oz Weather Resistance: Waterproof Finish: Black Gun Type: Pistol Features of Bayco Sub-Compact 650 Lumens Weapon-Mounted Light for Narrow Rail Handguns LED technology Ambidextrous rear-facing toggle switches Momentary or constant-on flashlight User-programmable strobe and battery-safe modes Aircraft-grade 6061-T6 aluminum housing Type III hard anodized finish Sharp focused beam rated at 136 meters Waterproof Impact and chemical resistant Serialized for personal identification Package Contents: Bayco Sub-Compact 650 Lumens Weapon-Mounted Light for Narrow Rail Handguns 1 CR123 battery Nightstick TCM5B