There is a world of difference between slam fired bursts and controlled automatic fire. Particularly with a locked breech high power rifle.
A real autorifle will not fire until the breech is closed and locked. That is why real full auto designs incorporate a means of tripping the firing mechanism after the breech has closed.
This rifle is malfunctionning, and there is no guarantee that the rifle isn't going to fire with the breech unlocked.
When this happens, someone could get hurt.
To suggest that the rifle be kept as is for shzts and giggles is unwise.
Apart from legal considerations, the rifle is dangerous to the shooter, or anyone nearby.