Because it's a real gun?
Obviously not much different visually to the time crisis gun I played with as a child. Or the replica Walther BB gun I bought from an army surplus place in Dulwich when it was around.
Raises all kinds of possible issues. Main one would be a kid (who in America may know not to pick up a Glock(!)) picking it up thinking it is a toy. It looks completely harmless and like something a child put together with a Lego set!
Because it's a real gun?
Obviously not much different visually to the time crisis gun I played with as a child. Or the replica Walther BB gun I bought from an army surplus place in Dulwich when it was around.