SureFire Flashlight Filter Assembly 1.37" Bezel Red Lens Black FM45 This filter assembly from SureFire is used to produce a smooth beam of red light that will not degrade night vision the way white light does. Hunters also use red light to avoid spooking game in the pre-dawn hours, as deer see poorly in the red spectrum. The filter is also useful for close range, non-tactical applications such as map reading as it reduces the intensity of light output.

Applying thumb pressure to the locking tab releases the cover; a spring mechanism keeps the open cover out of the way by holding it flat against the flashlight. A cam-locking lever keeps the entire unit securely attached to the flashlight.

Specifications and Features:
Cam-locking lever keeps filter securely attached to flashlight
Spring-loaded filter lid stays up when open, locks in closed position
Helps preserve dark-adapted vision
Provides secondary protection for clear lens

Fits:
Flashlights and weapon lights with a 1.37" bezel