This came across my TY feed recently. I personally have no need for them (yet) but they seem to be a good idea for suppressors and/or RMR's. They are all metal. Looks like the price is just under $200.

I just put this out there because I can see some people thinking these sights could be a benefit to them. I'm not going to get into the "These will get you killed on the street" debate or anything like that. I'd guess that other makes will probably follow sooner or later.