Thanks for the replies.
On the pictures above, the only one with the red ramp is the -4. The 2E's don't have them, neither does the -2.
However I found a -2 with the red ramp. Kind of confusing.
I kind of feel the same way on the MIM parts, but I guess I can live with it if that is all I can find.
On the red ramp front sight, I guess I can live with or without it.
Hopefully I will find one soon.