The Definition of Bolt
The mechanism of some firearms that holds the cartridge in place during the firing process.
It must be moved out of the way to load and unload the gun; this action may be manually performed
by the shooter pulling back on an exterior knob called the bolt handle and then sending it forward again, or the action may be performed
by other moving parts within the firearm. When the user must move the bolt manually, the firearm is called a bolt-action firearm.
19 Other Firearms Definitions You Need To Know
Abbreviation for Concealed Handgun License.
The cartridge for a shotgun. It is also called a "shell," and its body is usually made of plastic (metal shotgun shells are very rare, paper shotgun shells are extinct)
with a metal head.
Small shotshells are also made for rifles and handguns and are often used for vermin control.
The forward end of the bolt which supports the base of the cartridge and contains the firing pin.
A unit of weight widely used to express the weight of bullets and of powder charges. Equal to 1/7000 pound.
Slang for hearing protection. Applies to either muffs or plugs.
A built in lock that may prevent the firearm from being fired.
A generally non-magnifying optical device that has an optically collimated reticle,
allowing the user to look through a partially reflecting glass element and see a parallax free cross hair or other projected aiming point
superimposed on the field of view.
Invented in 1900 but not generally used on firearms until reliably illuminated versions were invented in the late 1970s
(usually referred to by the abbreviation "reflex sight").
The official US military designation for the Colt .45 semiautomatic pistol adopted by the US in 1911.
The gun was designed by John Moses Browning, and produced by Colt.
During trials, the Browning-Colt design beat out several competing designs, including one from Savage and a .45 caliber version of the German Parabellum ("Luger").
The M1911 saw its first combat in the Philippines and then in World War I.
Early use showed that it could be improved and in 1921 the M1911A1 was introduced, which featured a few changes like a reocontoured frame,
shorter trigger, and a rounded backstrap. The M1911A1 remained the standard US military handgun until it was replaced in the 1980's by the Beretta M9.
However, it remains very popular with civilian shooters in the US, and has been modified extensively to update it to
conform to more modern theories of handgun usage.
To shoot while standing and without bracing against anything. Sometimes it can also mean to shoot with your non-dominant hand.
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.
A shotgun pattern with erratic shot distribution, generally caused by gas escaping past the wads and getting into the shot.
An external, manual safety which is typically disengaged with the firing-hand thumb.
Also spelled "+P" or "P+".
Is small arms ammunition that has been loaded to a higher internal pressure than standard for it's caliber.
Many calibers are available in both standard and +p or +p+ variants. Ammunition marked +p produces more power
and higher pressures than the standard ammunition. Not all firearms are designed to handle the increased
pressure consult your owner's manual or gun manufacturer before using +P ammunition.
A chemical phosphate process developed during the second world war to provide an economical, durable and non-reflective surface finish to military firearms.
A part in a firearm that serves to remove brass cases of fired ammunition after the ammunition has been fired.
When the gun's action cycles, the extractor lifts or removes the spent brass casing from the firing chamber.
A type of shotgun ammunition which uses very small pellets with individual projectiles of less than .24" in diameter
designed to be discharged in quantity from the shotgun. The size of the shot is given as a number or letter--
with the larger number the smaller the shot size. It is so named because it is most often used for hunting birds.
The finest size generally used is #9 which is approximately .08" in diameter and the largest common size is #2 which is approximately .15"
A type of firearm in which the action is closed, with a cartridge in the chamber prior to firing. When the trigger is pressed the cartridge is fired,
and the action cycles loading another cartridge into chamber and when firing is stopped the bolt remains closed and the chamber remains loaded.
Two shots fired in rapid succession. Generally without getting a new sight picture on the target. If the second shot is fired after a second sight picture is captured it may instead be called a controlled pair.
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