But during training with live fire or Airsoft, operators doing close quarters combat (CQC) training using cartoon targets shoot the weapon all the time. When we do shoot/no-shoot drills with live role players the operator shoots the weapon too. Every time I’m the “bad guy” I always make sure to wear shooting gloves with carbon fiber or reinforced knuckles, because nothing sucks more than taking round after round to the hand holding the weapon. Anyways, when an exchange in gunfire occurs, both shooters are going to revert to shooting at the threat. So you could find yourself taking rounds to the strong arm. So you may be left with only your support arm/hand working.
http://centermassgroup.com/2012/01/firearms-training-support-hand/