What the Heck Is bear river bb gun?

https://rapid-wiki.win/index.php?title=OTW_Red_Dot_Sight_Explained_in_Fewer_than_140_Characters

A gun is actually a ranged weapon normally intended to pneumatically discharge projectiles[1] which can be good (most guns) but can also be liquid (as in water guns/cannons and projected drinking water disruptors)