I actually own two airsoft guns. The guns I own are battery powered and look NOTHING like real guns. They are about 12 inches long and are full auto. I play cause mainly cause I can't get enough paintball and cant always pay for paintball. I play with my cousins inside their barn where its a lot like a paintball field, only real small.
There is no excuse for BB guns. They are simply there to as was said before "getting kids and other numpties shot by the police!"