"This little laser is OK if you're only using it for looks, beyond that, the laser doesn't stayed zeroed on target very well. I was kind of surprised it didn't hold zero, because it was purchased for use on a (real steel) Berretta PX Storm .40cal. even on my GBB pistol, it doesn't stay true on target. My opinion is this: if you think you want a laser, do yourself a favor, save up about 40-50 more dollars and get yourself a nice laser. You really get what you pay for here, maybe a little less. In their defence, NcStar does make this laser out of durable metal."