Realistic-looking airsoft guns like the one used by the Robert Bateman students shoot a small plastic BB. They are regulated and can only be sold to adults. They pose no danger to the public – unlike a kitchen knife or baseball bat that can be easily obtained by anyone.
If an individual is foolish enough to display one in public, the only one in danger is himself when the police arrive. If an individual uses an airsoft gun in the commission of a crime it is treated the same as if he used a real firearm.
For those of us who use airsoft guns responsibly please do not ask the government to impose any more restrictions on us.