Giant air gun

If you have ever been to a pub in croston you will have no idea what I am talking about.Because there they have a huge two story indoor play area (I'm to old to play, sniff).This play area has a large air gun that fires the hollow plastic balls from the ball park.It fires them at a blistering speed for a childrens thing, at a bridge made entierly of ropes .The ballsnever hit anyone (the ropes provide a shield). But imagine using this from the comfort of your own home.Reaching for miles sending an annoying pastic ball into that evil neighbours garden would be ever so fun.