For many assault rifles, LMGs and SMGs there are only options for single shot semi-auto or a full-auto which fires off at least 10 rounds and is a huge waste of ammo.
Shoudn’t you be able to burst fire any automatic weapon though? Even if the weapon does not have an actual burst-fire setting, you can still just hold the trigger long enough to only fire ~3 rounds at a time. This should be an option for all automatic fire weapons which do not have an integrated burst setting.