Ultimate Arms Gear 90+ Lumens L.E.D Military Flashlight CREE LED Tac - Light Package Kit Set Includes: Weaver-Picatinny Ring Mount, Remote Pressure Switch Cord , Push Button Tail Cap, And Batteries - AR15, AR-15, M4, M-4, M16, M-16 Rifle Made For 7/8" Weaver-Picatinny Rail System