The generally upward motion of the muzzle of a firearm which occurs upon firing.
The velocity of a projectile as it exits the muzzle of a firearm.
The air that is compressed and moves out radially from the muzzle of a firearm after firing a projectile.
An electrical or optical device which signals the passage of shot or a projectile at the muzzle of a firearm.
Firearm which can only be loaded with powder and projectile(s) through the muzzle or front end of a cylinder in the case of a muzzleloading revolver.
The resultant noise that occurs at the muzzle of a firearm when the projectile leaves the muzzle and hot gases are released.
A muzzle attachment or feature that uses the propellant combustion gas with the desired effect of redirecting the recoil.
A visual phenomenon that appears to displace a target from its true position through a shimmering effect. It is caused by heated air that deflects light rays.
A cover put on the muzzle end of a barrel to keep out foreign matter.
Any malfunction during the feed cycle of a repeating firearm resulting in the failure of a cartridge or shell to enter the chamber completely. Also known as Failure to Feed.