Once Arnie has wreaked havoc in order to get the coolest outfit possible in such a dodgy bar he relieves the club owner of his shot gun. As Arnie steps up to nick his shades too, he puts the gun into his right hand, and removes his left, in the next shot, he does exactly the same thing again- what rotten editing!!
This might be completely stupid, as I haven't seen the movie in years and I don't know much about guns.
But how many rounds can fit into the shotgun that he took from the guy outside the bar as he was leaving? The guy fired one shot into the air, then I remember Arnie firing off a shot or two into the locks on the gates. If anyone knows about guns, maybe they can tell me if there were too many shots fired for that gun?