Decent budget minded laser - Sightmark LoPro Combo Green Laser/220 Lumen Flashlight

Item came nicely packaged and has good craftsmanship. No loose parts or pieces heard when shaking. Laser attaches to the standard 1913 rail with no problem with a good tight fit. I bought 2 one black and one tan and have taken them both to the range. After 4 magazines one of the rubber buttons came off but it was found and put back on easily and hasn't come back off since. I plan to put some adhesive around all the buttons to mitigate this happening again. I have both lasers mounted on side panels and sighted in at 50 yards to point of aim with my red dot. The laser is bright enough to see 40-50 yards in the daytime and 100+ at dusk.One of them seems to have problems drifting out slightly after about 2 magazines. Not all the time but often enough that I remember to check. I'm not sure if it is because they are mounted on the side. I will remount on the top rail and see if it continues. If it doesn't I will update this review.