What the Heck Is bear river bb gun?

https://fast-wiki.win/index.php?title=10_Principles_of_Psychology_You_Can_Use_to_Improve_Your_Airgun_Blog

A gun is a ranged weapon commonly intended to pneumatically discharge projectiles[one] which might be reliable (most guns) but can also be liquid (as in water guns/cannons and projected water disruptors) and even