How to Sell bear river bb gun to a Skeptic

http://josueixsb379.aircus.com/from-around-the-web-20-awesome-photos-of-gamo-big-cat-1250

A gun is actually a ranged weapon typically designed to pneumatically discharge projectiles[1] that are strong (most guns) but will also be liquid (as in water guns/cannons and projected h2o disruptors) or maybe