I've heard some report they could move their rear sight easily, and others have had a hard time moving them. I don't even have a vice, so a gunsmith will be relegated this task. I'm still in wonder about the shooting low for now. I read a post where someone raised their rear sights. I love the M&P pistols. I will do what it takes. For the moment, the Glock 23 will remain in my hoster for my EDC, but I'm anxious to get this whole sight picture thing taken care of so I can start carrying the M&P. But I am certainly on that journey.