A gun is a normally tubular weapon or other device designed to discharge projectiles or other material.[1] The projectile may be…A gun is a normally tubular weapon or other device designed to discharge projectiles or other material.[1] The projectile may be solid, liquid, gas or energy and may be free, as with bullets and artillery shells, or captive as with Taser probes and whaling harpoons. Types of guns include Military, Machine Guns, handguns, Autocannon, Artillery, and Hunting, among others. Hope you enjoy the theme.