The Definition of AR
Contrary to some people's belief, AR does NOT stand for Assault Rifle. The designation AR stands for the original designing company ArmaLite.
An AR is a firearm platform originally designed by ArmaLite and built by Colt,
an AR is a lightweight, intermediate cartridge magazine-fed, air-cooled rifle with a rotating lock bolt, actuated by direct impingement gas operation or long/short stroke piston operation.
It has been produced in many different versions, including numerous semi-automatic and selective fire variants.
It is manufactured with extensive use of aluminum alloys and synthetic materials.
Types of ARs include AR-15, AR-10 and AR-7.
19 Other Firearms Definitions You Need To Know
The arc described by a projectile (or a load of shot) after it exits the muzzle of a firearm. Falling objects accelerate downwards at a rate of 32 feet per second, per second.
The faster a projectile travels, the greater the distance it can cover in a given time before dropping too far. Hence, the higher the velocity of a bullet, the flatter the trajectory it will achieve.
The term referring to the action of manually drawing the hammer back against its spring until it becomes latched against the sear,
or sometimes the trigger itself, arming the hammer to be released by a subsequent pull of the trigger. Some external hammers, and all internal hammers,
may be cocked simply by pulling the trigger
Also spelled Forend.
That part of the stock forward of the action and located below the barrel or barrels.
It is designed to give the shooter a place to hold the front end of the gun and protects the shooter's hand from getting burned on the hot barrel.
The act of setting up a telescopic or other sighting system so that the point of impact of a bullet matches the sights at a specified distance.
Slang for eye protection. Referes to either goggles or safety glasses
Abbreviation for Course of Fire.
More commonly known as WSM, it is a family of centerfire cartridges designed by Winchester Repeating Arms Company
A shotgun with two barrels which are situated next to each other. Somtimes also abreviated as SxS.
Sometimes spelled Bi-Pod.
A support device that is similar to a tripod or monopod, but with two legs. On firearms, bipods are commonly used on rifles to provide a forward rest and reduce motion.
The bipod permits the operator to rest the weapon on the ground, a low wall, or other object, reducing operator fatigue and permitting increased accuracy.
An action type that when the trigger of a gun is pulled, the gun gets cocked and the hammer (or striker) is dropped.
This applies to both revolvers and semi-automatic guns.
On a double action revolver, when the trigger is pulled, the hammer is cocked before releasing.
With a double-action semi-automatic pistol, the hammer does not have to be manually cocked (via actually pulling back the trigger or tracking the slide), the hammer (or striker) will be cocked while the trigger is being pulled.
A firearm that only the hammer drops when the trigger is pulled is a single action gun.
The tendency of a bullet to tip in flight and hit a target sideways, leaving a distinctly oblong hole.
This destabilization of the spinning bullet in flight is typically caused by a bullet weight inappropriate
for the rate of twist of the rifled barrel, an out-of-balance bullet or its having nicked an impediment such as a blade of grass, in flight.
A hollow, piece of metal (or plastic in the case of a shotgun shell) that is closed on one end except for a small hole which holds a primer.
The open end holds the bullet. The hollow portion holds the powder.
Together the assembled unit is called a cartridge.
To jerk a firearm off target inadvertently in the instant of firing in timid anticipation of recoil. Commonly caused by learning to shoot with a gun more powerful then they are ready for.
Commonly shortened to mag pouch, this is a device to hold extra magazines which fastens to the shooter's belt.
A firearm that has had numerous careful machining cuts
taken in its exterior with a view to exposing and demonstrating the functioning
of critical parts of its mechanism
Also spelled blueing.
A passivation process in which steel is partially protected against rust, and is named after the blue-black appearance of the resulting protective finish.
True gun bluing is an electrochemical conversion coating resulting from an oxidizing chemical reaction with iron on the surface selectively forming magnetite
(Fe3O4), the black oxide of iron, which occupies the same volume as metallic iron. Bluing is most commonly used by gun manufacturers, gunsmiths and gun
owners to improve the cosmetic appearance of, and provide a measure of corrosion resistance to, their firearms.
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.
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