I seem to remember that a few years ago there where more tanks in private hands in the UK than in the army. The local military vehicles club have a 25 pounder that they have rigged to fire, using a shotgun shell, it creates plenty of smoke, and quite a good "BANG". At the wings over Wanaka there is pleanty of action with machine guns, British, German, and American, all blank ammo, along with air blasts of petrol vapour, that rattle windows. A lot of help from Weta Workshop, film special effects specialists. Our fire arms laws are proberbly more lax than the UK, and Austrailia too I think. Ian S C