Gun Knight, which is an action game on www.flash-game.net. A gun is a weapon that propels projectiles such as bullets. The projectile is generally fired through a hollow tube known as the gun’s barrel. The barrel’s diameter, the distance through the barrel, is measured in inches or millimeters. The diameter determines the size of the bullet needed. Differing from the musket, most modern guns are rifled, with a series of grooves spiraling along the barrel; exceptions include smoothbores on shotguns, tanks, AFVs and some artillery. So now, use your gun to protect the princess.