It is all over the internet that AmeriGlo would have taller sights for suppressed M&Ps out this year (rumored release was this past January). Well, I couldn't find them on their website, so I emailed them.

Turns out that they are still coming and anticipated for release in the Fall. Although delayed this is still good news. Lots of M&Ps out there, and lots of threaded barrel options, including a couple from S&W themselves.