Yes, I bought a side mounted Laserlyte for my LCP, and on the first test fire the dot turned into a large square of dots. When I first called them the CS person told me to first clean the lens well with a soft brush to make sure there wasn't an obstruction. When that failed to correct the problem I called back, and within 4 days had a brand new laser, a postage paid envelope for the bad one, and A FULL CARD OF ONE DOZEN SPARE BATTERIES for my inconvenience
I'd say great SC!