Top positive review
Surprisingly Light, Accurate and Consistent
on April 11, 2014
Installed it once, sighted it once, still nails a 3-inch cluster at 40 ft after 200 rounds and daily carry.
It's pretty easy to calibrate if you have a solid target and surface to work with, and the finger sensor is already perfectly calibrated.
As with all underside lasers, if you sight it in at 20ft a closer shot will land slightly higher and a farther shot will land lower than the beam.
Overall this is an amazing tool, I highly recommend it for this weapon.
I would recommend using loc-tite on the installation screws just to make sure it doesn't move.