@RABEL222,
I hear the saying but it have nothing to do with the discussion concerning full auto weapons and once more the likelihood of you ever having a gun in your hands seem remote not only due to that comment but that you are trying to sell the idea that it is not a job for someone with the skills set of a gunsmith to convert a semi-auto weapon into a fully auto weapon or that fully auto weapons are more deadly on the whole then semi auto weapons.
In a firefight for keeping your enemy head down is about the only real usefulness of non-mounted fully auto machine guns.
If your desire is to just put a lot of lead downrange at close range for the purpose of wiping out a room full of children for example a pump/semi auto shot gun would do a better job.
If you wish to engage other shooters at any range the pray and spay method of going fully auto will likely get you kill as most of your fire go over the head of the person you are aiming at.
To sum up all your comments/postings taken together is a clear indication that you never fired a gun in your life.
So why do you just not come clean as there is no shame in never having had a firearm in your hands however there is shame over pretending otherwise.