I have tested them now for 2 days and here is my review (if anyone cares):
The universalx1 macro is working perfectly for the m16 (rapid fire), scar, m416. For the AKM its not perfect, but still very good. I found controlling the Vector not so easy, even with the macro, but the UMP works like a charm. By the way: you don't need to use any attachments on the weapons, I didn't know that first.
Universal2x is nice for long range shots on single fire, working very good on all assault, but not so good with SKS and mini. Haven't tested it with SMGs yet.
Universalx4 is my favorite probably. Works crazy good with the assault rifles and snipers. Even close range you can shoot all weapons like a machine gun on single fire

Also very nice to blow up cars which are driving by.
Overall review: I used my own ****** amc macros for a long time (I made a lot of macros myself and got some free one of the internet), but these are working way better. I can recommend checking them out, even if they take monthly money for that now.