PM sent. They can't do it on the 4-16. The others they can.
I talked to a customer service rep less than a month ago that told me they would do it on my 4-16 Black Diamond and turn around time would be around 6 weeks. They can't put the XTR turrets on it, instead they install the Tac-2 turrets. Maybe that was your confusion?
My thoughts exactly. I even asked the guy if he had any spare parts just laying around by chance. He said no. So if someone needs an awesome mil dot scope this is it. The Black Diamond scopes have excellent clarity, especially with the side paralax adjustment.