Just got a laserware sub zero 100 laser designator i must say the range is awsome and its not spooking anything when on the right sized beam, concentrate the beam and it acts as a bird scarer in daylight used it to shift pidgeons off a field a few times now right out in the middle several hundred yards away...night time identification 400 yrds with the right scope light awsome and a 18650 battery last three hours... i would reccomend it