The Most Common Complaints About Air Gun Blog, and Why They're Bunk
https://wiki-triod.win/index.php?title=So_You've_Bought_OTW_Red_Dot_Sight_..._Now_What%3F
A gun is actually a ranged weapon ordinarily intended to pneumatically discharge projectiles[1] which might be sound (most guns) but can even be liquid (as in water guns/cannons and projected water disruptors)