USMC-Johnson
Expert
For a light especially on a long gun i think should have a pressure switch for activation. You can get this kit in the shop for less than it costs on mid way and you get more light and a good company backing up their product. you also have the option to run it on a pistol if you want as well since it comes with both tail caps.
Streamlight TLR-1 HL Long Gun Kit Weaponlight LED 2 CR123A Batteries
Streamlight TLR-1 HL Long Gun Kit Weaponlight LED 2 CR123A Batteries