It depends on the gun.
Some bb guns are made to look like actual real glocks or whatever. Can’t tell beforehand b/c they are not made with any indicator they are bb guns.
And why would a kid’s first instinct be to pull out a gun he had in his pants? I was a kid and I’d never have thought that was the right thing to do if a cop was coming over to me.
There’s a photo of the gun at the site. It looks fairly real, even up close.