SureFire 6PX Pro Dual-Output LED Flashlight with L&M 1" Tube Shotgun Mount - Fits Winchester 1300 Defender; Mossberg 590, 500; Remington 870, 1100, 1187 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 1" Single Ring Mount Tube. Fits Winchester 1300 Defender; Mossberg 590, 500; Remington 870, 1100, 1187; Mariner and others with extended magazine tube