A factory Armorer instructor told me that the guns go out serial numbered by type and they would not convert safety to non-safety guns or alter magazine safety features. I've seen folks here's come up with the parts to make a frame already cut work, but I'm betting against S&W cutting the frame for you. But then again, some things seem to depend on who picks up the phone when you call them. Considering shipping, though, wouldn't it be cheaper just to swap for a TS model?