I do props work with the armory department occasionally. Blank barrels and rounds are dangerous also. You gotta treat those just like live stuff. Its still a contained explosion, but the barrel is plugged...
Of course. But whether something is dangerous is not the test for if it is a firearm. If it does not have a barrel, it is not expelling a projectile (at least not in the conventional sense). No barrel=not a firearm in GA.