The shooting mechanics are a little wonky...
...bruuuuh! You're being extremely nice. That entire community is against a proper FOV for engagements, so 100m shots look like 600m shots in ArmA3. It's mind blowing, but they claim it's in the pursuit of realism (the whole "The human eye doesn't zoom" / missing the point entirely way of thinking). The recoil is also pretty bad; The M4 kicks like a .338, and the AKM kicks like a .50. Mix this all with not being able to see clearly past 100m and you have a situation where I, as a RPK gunner, required a squad member with Binoculars to spot for 200m shots, and recoil was so excessive that I couldn't keep three round burst on target and had to do the entire engagement on single fire.
But, all that being said it's still fun to work with a well coordinated squad. It's the only thing that stops me from raging and keeps me coming back.