The rear sight elevation adjustment screw on my M&P22 Compact moves between 1/4 and 1/2 turn after shooting a mag or two through the firearm. After shooting, I keep having to turn the adjustment screw back to the correct position.
The have only adjusted the rear sight elevation adjustment screw about 1/2 turn from the factory setting so I do not have the adjustment screw set to an extreme setting. When I turn the elevation adjustment screw I hear a click.
Is there anything that I can do to stop the rear sight elevation adjustment screw from moving when I shoot the firearm?
Here is the response that I received from Smith and Wesson. Anybody got a better solution??
"The best option to prevent any creep it to place a very small amount of thread lock (blue semi permanent) on the screw and let it dry. Then place the screw in the assembly. This should give the screw some friction to prevent the creep from vibration. A very small amount should be used to coat thinly one side of the threads."