The fact that they made new optics for the SMG's disturbs me. It's a sign that the setup for weapons, optics, and zeroing isn't very well structured and BIS/mod-makers have to put in extra time and effort to make this stuff work. In other words, what disparities exist between weapons or how optics zero that requires an optic to be copied and configured so that the bullet impact matches the optic zero? I'm sure there's more to it than this, but I can only comment on what I see.
I'd say this ticket is still a relevant issue.