Minor Bartender's Shotgun is Contraband

[Superlagg]

Keep in mind that Beepsky, Harner, and the rest of the jackass robot patrol are kinda dumb. They see a gun-shaped thing and an ID that doesn't specifically state that the holder is above the law and they flip out. This is why Sec is around; while they're not much smarter, they can use their (usually) better judgement to tell if the Barman really shouldn't be using that thing.

Personally I'd take this up with the manufacturer.