Q334: Are BB guns illegal?
BB guns (which fire plastic or aluminium balls by different methods such as compressed air or an electrical system) may or may not be firearms and so may or may not be prohibited.
The soft air type of gun which is 'toy like' (though it may be a little too powerful to be officially classed as a toy) does not fit within the definition of a of a section 1 firearm because it is usually too low powered and is probably designed to fire plastic/aluminium balls (see Q326 regarding the exemption from holding a section 1 firearms certificate for airsoft guns).
So if you are unsure whether your BB gun is legal or not, then it is worth checking with your police force's firearms department who will be able to advise you.
Please note that all calls to police involving firearms are treated as if it is a genuine firearm so be aware that if you do wave an imitation firearm around you could find yourself surrounded by firearms officers pointing real weapons at you.