I just purchased my M&P Shield 9mm and, although I have had many semi-auto pistols with a safety, I find that the thumb safety is very very stiff.
Without shooting the Shield yet, I thought I would poll other Shield owners to see if they had the same experience with safety stiffness. I can take the safety off without an issue. It is when you put it back in safe with the left thumb, after shooting, is where I see the problem. It is so stiff I either have to re-adjust it in my hand or use my other hand to put it back in the safe mode.
I worked with .45 semi-autos for over 27 years and have a Ruger SR9, both with safety. There is never an issue of re-engaging the safety.
Does it need to be shot and clicked on and off over and over to make it smoother/easier? What are your experiences? I would rather not send it back to the factory since it is so hard to find.