No, that would not make it fully automatic. Pennies won't even fit in the BCG behind the firing pin.
Where did you hear that would work?
And do you have a link to the ATF's commandeering of said airsoft gun shipment? Airsoft guns cannot be modified to fire live ammunition....
If this is the type of stuff that is told to Cali's civilians and politicians then no wonder the gun laws are like they are over there......
or am i missing something
No, you are missing lots of things...