Letter M

The Definition of Mortar

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Mortar

An artillery piece used to fire shells over short ranges at very high trajectories.


19 Other Firearms Definitions You Need To Know


Adjustable Trigger

A trigger that can be easily adjusted by the user. Adjustable triggers are common on specialized target-shooting firearms.

CCL

Abbreviation for Concealed Carry License.

Bayonet Lug

A mounting point on a small arm that allows a bayonet or other accessory to be attached.

BATF

Short abbreviation for the Bureau of Alcohol, Tobacco, Firearms and Explosives

Lever Action

A type of firearm action which uses a lever located around the trigger guard area, (often including the trigger guard itself) to load fresh cartridges into the chamber of the barrel when the lever is worked.

Projectile

A bullet or shot in flight after discharge from a firearm.

Ballistic Fingerprint

A fired case has marks upon it that it picked up from the extractor, ejector, and breechface of the gun when the shot went off. A bullet fired through a rifled barrel also has rifling marks unique to the barrel that launched it. A record of these marks, when stored in a central database, is called a ballistic fingerprint. Some states require this record to be made by law, so that individual guns can be located from bullets or casings found at the scene of a crime.

Knurled Surface

A metal surface which contains a pattern of ridges or beads.

Bandolier

A pocketed belt for holding ammunition and cartridges. It was usually slung over the chest. Bandoliers are now rare because most military arms use magazines which are not well-suited to being stored in such a manner. They are, however, still commonly used with shotguns, as individual 12 gauge shells can easily be stored in traditionally designed bandoliers.

Frontstrap

Front, metal, part of a handgun's grip, which together with the backstrap, provides a mounting frame for the grip panels.

C&R

Abbreviation for Curio and Relic

Forend Iron

The steel skeleton of the forend (above), into which any moving parts are fitted and which mates to and revolves about the action knuckle when the gun is opened.

Backstop

Anything that will safely stop a bullet and prevent it from hitting anything else after the target is struck.

Quarter Master

The person who supervises stores and distributes supplies and provisions.

Cover

Anything a person can hide behind that will probably stopp a bullet.

Collimator Sight

Also known as collimating sight or occluded eye gunsight, a Collimator Sight is a type of optical "blind" sight that allows the user looking into it to see an illuminated aiming point aligned with the device the sight is attached to regardless of eye position (parallax free). The user can not see through the sight so it is used with both eyes open while one looks into the sight, with one eye open and moving the head to alternately see the sight and then at the target, or using one eye to partially see the sight and target at the same time.

Sniper

A military person designated as a special marksman who is used to shoot designated targets of opportunity at long range.

Drift

The departure of a bullet or shot charge from the normal line of flight. This can be caused by wind or the unbalanced spinning of the bullet.

Can

Slang term for a firearm sound suppressor.