MONTE CARLO STOCK

A stock with a raised comb to bring the eye in alignment with the sight.

MOUTH

The open end of a cartridge case or shotshell, from which the projectile or shot charge is expelled in firing.

MULTIPLE LEAF SIGHT

A type of open, rear sight having more than one folding leaves. It may also have one fixed leaf.

MUSHROOM

A descriptive term for the post-impact profile of a bullet that is designed to expand upon striking a target.

MUSHROOMING

The act of expansion of a bullet upon impact with a target.

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.