The FM16 Blue Filter produces a smooth beam of blue light. Hunters use the blue filter to track wounded game at night because blood stands out more distinctly against foliage when viewed under blue light. 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.
MAP is a voluntarily agreement
that all legitimate manufacturer authorized retailers enter into with
their authorized USA supplier, usually the manufacturer, and in some
cases, the official USA distribution arm designated by the manufacturer.
According to such agreements, retailers can usually sell MAP restricted
items for any price they choose, but may not display in any print or
online advertising, a price below the Minimum Advertisable Price.