RC Tank Warfare community hobby forum

Hi People,
I am new to this so please bear with me. I have a Heng Long Panzer IV F2 which I would like to upgrade to a G model with the KwK40L 43 gun. Is it possible to purchase a gun which will fire BBs, and if so, where can I get one? Also I am upgrading the tracks and wheels to metal, and would be interest to know the best way of removing the original plastic return rollers.
Thanks

will have to say forge bear (dave) look him up in vendors or private message him that if your in the uk and there is some others in vendors to
cheers Derek