MUZZLE JUMP

The generally upward motion of the muzzle of a firearm which occurs upon firing.

MUZZLE VELOCITY

The velocity of a projectile as it exits the muzzle of a firearm.

MUZZLE WAVE

The air that is compressed and moves out radially from the muzzle of a firearm after firing a projectile.

MUZZLE–BREAK

An electrical or optical device which signals the passage of shot or a projectile at the muzzle of a firearm.

MUZZLE LOADER

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.

MUSKET

Military firearm with long barrel and fore-end or forearm extending nearly to muzzle.

MUSKET CAP

The ignition source for most military muzzle loading rifles of the Civil War era, usually consisting of a copper alloy cup containing the priming mix. They are larger than percussion caps and typically incorporate a continuous or segmented flanges (Wings) at the cup mouth for ease of handling.

MUZZLE

The end of a gun barrel from which the bullet or shot emerges.

MUZZLE BLAST

The resultant noise that occurs at the muzzle of a firearm when the projectile leaves the muzzle and hot gases are released.

MUZZLE BRAKE

A muzzle attachment or feature that uses the propellant combustion gas with the desired effect of redirecting the recoil.