Weapons - Optics 光学  (continued)
spotlight
One way to increase illumination without burdening a weapon is to use a separate spotlight. The example shown above is fairly lightweight (17 ounces), not especially expensive ($30) and reasonably powerful (160,000 lumens with a claimed range of 1200 meters). What the power means in terms of visibility through trees after dark remains to be determined. An attractive feature is that the location of the spotlight need not necessarily be the location of the weapon and of the shooter. At the opposite end of the usability spectrum the brightness and distance would be useful for signalling rescuers.
 

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