Most 1/24 scale model trucks are left hand drive. Sometimes you can convert, I have an Opel fire truck and a DAF box van (it wasn’t sold as a box van) which had nice flat dashboards so could be, and have been, converted to right hand drive.
Modern trucks have dashboards that look like the bridge of a starship. You can’t just swap thngs around.
However, with a 3D printer, you have the potential to 3D-scan that piece of dashboard, reverse it and print a new one. If you print loads of them you could set up an eBay business selling them to UK model builders. They are so hard to get, you could probably cover the cost of the printer in a few months.
As for it being able to ‘print a gun’, pfft. You can make a single shot gun out of wood and plumbing and it would cost you a hell of a lot less than a 3D printer. Besides, the gun, however made, is useless without bullets and you can’t print those.
Worryingly, metal detectors cannot detect a plastic gun.
The bullets are not plastic. The metal detector will find them. The X-ray scanners will see a gun shape. You are not going to get on a plane with this.
I’d be far more concerned about plastic knives or sharpened credit cards. Neither of which need any more technology than a good file.
Still, the 3D printer is on my list… when the price comes down into the real world.