The TCM Sub Compact Weapon-Mounted Light uses a super-bright 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.Features :Fits on multiple single stack sub-compact handguns including Glock G43X MOS, Glock G48 MOS, Shadow Systems CR920, H&K HK45C & Hellcat100% Ambidextrous Independent SwitchesSwitch operation/function is the same on both sides of weaponDownward motion for momentary/constant-on3 Inserts Currently fits more than a dozen makes and modelsBattery Safe Mode is Switch Controlled and NOT retained in Memory