SureFire 6PX Pro Dual-Output LED Flashlight with L&M 25mm Tube Shotgun Mount - Fits Mossberg 590A1 Heavy Millspec Barrel and Ithaca Shotgun Magazine Tubes Includes: SureFire 6PX Pro Dual-Output LED Flashlight - 320 lumens (6PX-D-BK) Virtually indestructible LED emitter regulated to maximize light output and runtime Two output levelshigh for maximum light, low for extended runtime Includes high-energy 123A batteries with 10-year shelf life Fits Special Mount for Mossberg 590A1 Heavy Millspec Barrel and Ithaca Shotgun Magazine Tubes