The over-head player icon and red dot sight reticle of the AK rifle look to similar. It's hard to tell them apart when you're firing at an enemy and the reticle is jumping all over the place. An option to change the reticle or team colors might be a good solution.

Example at t=6m0s in this video:
https://www.youtube.com/watch?v=Lkg7RPRp2jA#t=6m0s