The cost of firing full auto 8mm blanks would be prohibitive at best, those things are expensive.
The gun itself is set up differently than a real Beretta so modifying them to fire full auto would require a different mechanisim than the real deal...which in a way is good because if you got caught with components to convert a Real beretta to full auto, you will be dealt with harshly by the feds.
As for durabioity, you are correct in assuming the pot metal blank guns will wear out...and in terms of comparing them to real guns, they wear out quickly.
I've seen many of those 8mm's go belly up, after heavy use. The pot metal wears to the point of deforming and loosing tolerance on the major working parts causing ireparable damage.
I'll pick up one of those guns and see what it takes to convert it to full auto.
M
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