Olight M30 Red Filter

NOTE: If ordered by itself, this item has the minimum shipping charge of $7.75 for B.C., $10.50 for AL, SK, MB and $12.50 for the rest of Canada. If added to an order with a shipping charge already, it will only add $0.45 to $1.50 to the shipping cost. 
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Red Filter
Used to preserve the eyes natural adjusted night vision, will disturb eyes the least of all colours which helps your eyes to stay adjusted for night conditions when map reading or navigating, use by aircraft personnel, military and hunters to avoid spooking game, deer and some other animals see very poorly in the red colour spectrum.