Ultimate Arms Gear Tactical Xenon Flashlight Tac-Light Kit For Mossberg 500/590/835/Maverick 88 12/20 Gauge Shotgun+ Includes Barrel Clamp And Remote Pressure Switch Super Bright 90 Lumens Installs In Seconds No Gunsmithing Needed Widely Used By military, Police And Swat Teams Remote Pressure Switch And Push Button Liquid Filled Compass Back For Your Choice Of Application