Anyone who really knows guns and has shot full auto knows that full auto has limited real world use. More than anything it works as suppressive fire, but mostly it just looks cool on TV and in movies. It is rarely used in the real world when semi-auto is an option. I know operators that have never shot their carbine in full auto that have been in numerous firefights, you are just far more effective in semi auto. My buddy Dave Royer and I did a drill to help demonstrate this.