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Rich, no Sir. No issues were encountered by Smith and Wesson during testing with optics/red dots. Cheer and stay safe!

YES, but it is not a big deal. The ports are all the way in the front and do make the optic slightly dirty after a hundred rounds or so. So you have to clean your lense every time after range. Apart from that, there is no other issue with port and optics. It will work fine, just dirty a bit quickly. (I think it has more to do with gas from chamber rather than ports) I hope this helps!