The TCM-550XL Compact Tactical Weapon-Mounted Light uses a super-bright LED rated at 550 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 and constant-on lighting modes. The housing of the TCM-550XL is constructed from aircraft-grade 6061-T6 Aluminum with a polymer rear housing. Includes four handgun-specific modular rail inserts (pre-configured with C1 insert for Glock pistols), two spare Allen screws, Allen wrench, and one CR123 Lithium battery.NOTE: THIS PRODUCT IS ONLY AVAILABLE THROUGH AUTHORIZED LAW ENFORCEMENT AND SPORTING GOODS NIGHTSTICK DEALERS.WARNING – This product can expose you to less than 0.01% of DEHP, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to http://www.p65warnings.ca.gov/.