The TCM-5B Subcompact weapon-mounted light, designed for short rail handguns, emits 650 lm using a single CR123 battery. Its distinctive rail clamp is tailored to fit narrow-rail/short rail subcompact pistols with precision. Engineered with expertise, a TIR lens projects a focused bright spot, extending up to 136 m for identifying and confirming threats. The lens additionally forms a clearly defined outer halo to provide extra situational insight. For seamless operation, the TCM-5B boasts fully ambidextrous and intuitive rear-facing toggle switches on each side. These switches enable effortless toggling between momentary-on and constant-on lighting modes and the light offers a user-programmable strobe mode and battery-safe mode as needed. Constructed using aircraft-grade 6061-T6 aluminum and featuring a polymer rear housing, the light is paired with a CR123 lithium battery.