They look great, a ton better than I could do.
One minor critique...
I would consider painting the some of the rifles (and/or some of the attachments on the rifles) in other colors.
There tends to be a lot of variation among the 'bearded units' even within a small unit.
I suspect you may have kept them black for contrast purposes, I get that. I would have tried to add a bit more variation though. Like you have the one backpack as coyote brown (or whatever).
But again, the painting is phenomenal, they really do look great as is.