SPECIFICALLY REGARDING <12ft pb air rifles (i.e. non-FAC). My understanding is: Carrying a loaded Air-weapon in a public place 6 months imprisonment and / or £5,000 fine. Trespassing on private land with an air weapon 3 months imprisonment and / or £2,500 fine. Dumb question: I assume a public train counts as private land or failing that a public place so I would be buggered it I lugged it around. The air rifle would be in a slip bag.