the front sight on my usp 40 keeps drifting from side to side,i had new ones installed and i'm having the same problem.any ideas
And if you ever need to get it off - there is a solvent for superglue which will soften loctite as well. You can get it anywhere that radio controlled models are sold, they call it debonder, it's kept with their CA glue.If you use loctite, be sure to use the one that is less permanante in case you ever want to change them again. Stuff works great. I use it on a screw that holds down my carborator on an old classic of mine.