Place a slammer or marshall with yourself as commander with some enemy infantry and watch how they shoot the coax mg at them from different ranges. To test the burst firing with missing sound effects,have the ai in a slammer engaging known enemies from around 500m but don't assign a target to the gunner,as they seem to fire in single shot without the silent bursts when given a target,but fire these soundless shots when they aren't assigned or are told no target when there's known enemies.