Viridian Reactor R5-G42 Red Laser Sight for Glock G42 includes Holster
http://www.amazon.com/gp/product/B00N11Q5KY?tag=sukses2015-20
WEIGHT 78 oz including batteries
CONSTRUCTION High strength thermo molded polymer
BATTERY LIFE 1 hour constant 2 hours pulse
USER ADJUSTABLE Easy windageelevation adjustments on laser
LASER RANGE Effective targeting up to 100 yards in daylight 2 miles at night