Won't hold a zero - Streamlight TLR RM 1 Rail Mounted LED Tactical Lighting System w/Green Laser

Installed the laser and zeroed it to my prism sight. It is zeroed via little set screws. The up/down set screw was tight, the left/right was not. I set my AR down on the table to take some pictures, and when I picked it back up it was obvious that the POA had shifted to the left. If it cant withstand being set down it sure can't withstand recoil. In the process of returning it.

The selector switch is nice for being able to switch between light only, laser only, and laser and light.