The AOF-M is a color filter for flashlights with a 34 mm bezel.Easy to attach and remove. Flats on the sides to prevent rolling.
Red is a good choice for fishing, as it attracts fish and the light doesn't reflect off the water surface. Also retains your adaptation to the dark, which is very tactical.
Green makes outlines stronger and provides good vision without hurting your adaptation to twilight. Suitable for map reading etc.
Blue highlights blood, which is useful when tracking a wounded animal that moves on any amount of legs.
The body of the green ones has a different appearance, as seen in pictures.