Well Jack if you are under 14 you might have a problem buying an airsoft Tank unless accompanied by an adult and as to carrying stones you may well find yourself being charged with going equipped (Car thieves Smash car windows with them to gain entry)
Carrying a stick is fine, Well it is if you can prove why you are carrying it, More than one citizen has been sent to prison for carrying a baseball bat in their car.
When I was a boy just like all the kids of the day I owned a shiny cap gun in the shape of a Colt 45 peacemaker,
Anyone even a kid toting such a toy today, assuming you could buy one, stands a good chance of being surrounded by armed constabulary and spending an uncomfortable time explaining what you are doing,
I owned a catapult and later when I got to 14 an air pistol and then an air rifle, no problems,
They were quite legal and you were trusted to use your common sense about their use. We used to shoot grey squirrels and take the tails to the Police station where they would pay us 10 shillings per tail ($1) because they were rated as vermin,
Today an adult can own an Air Pistol or Air Rifle but you have to be very careful in the carriage (Gun Bag) of them and where they are used, Never in an area the public have access too,
And yet it is as a countryman relatively easy to buy and license a Shotgun
NOT A PUMP ACTION,
I think they hang you from the nearest lamp post for that.
Don't you worry though, I can give a nasty insult if provoked.
Shaun.