"The TCM-5B Subcompact Tactical Weapon-Mounted Light uses an LED rated at 650 lumens working in conjunction with a precision engineered total internal reflection (TIR) lens to create a bright white beam of light rated at 136 meters. This weapon light features completely ambidextrous and intuitive rear-facing toggle switches on each side of the light to operate the momentary-on, constant-on and strobe lighting modes. The housing of the TCM-5B is constructed from aircraft-grade 6061-T6 Aluminum with a polymer rear housing. Includes three modular rail inserts, two spare Allen screws, Allen wrench, and one CR123 Lithium battery. This light is compatible with the optional li-ion rechargeable 16310 battery and charger sold separately. This light is comaptible with and designed to fit narrow short rail handguns: Glock G43X MOS, Glock 48 MOS, Glock 43X RAIL, Glock 48 RAIL, Sig Sauer P365 X-Macro, Heckler & Koch HK45 Compact, Smith & Wesson M&P M2.0 Subcompact, Beretta PX4 Storm Subcompact, Spring Field Arm, XD-E & XD-S, KelTec P15, Walther CCP & 22, Springfield Armory Hellcat and many 1913 Short Railed Subcompact handguns.