Why You Should Forget About Improving Your Air Gun Blog
https://online-wiki.win/index.php?title=How_to_Sell_OTW_Red_Dot_to_a_Skeptic
A gun is usually a ranged weapon generally built to pneumatically discharge projectiles[one] which might be reliable (most guns) but will also be liquid (as in water guns/cannons and projected water disruptors)