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
Slang for hearing protection. Applies to either muffs or plugs.
On guns (mainly shotguns) that have two barrels, there is a trigger for each barrel that work independently from each other.
The common part of a handgun to which the action, barrel and grip are connected.
Circular steel fittings, about 1/2 inch in diameter, screwed into the breech face of a gun and through which the firing pins pass.
Firing pin bushings allow the convenient replacement of broken firing pins. They also allow the renewal of an older gun where, over the decades,
leakage of high-pressure gas from corrosive primers has eroded the breech face around the firing pins; and replacing these bushings with new ones,
slightly oversized can compensate for a situation where proper headspace has been compromised.
Crude adjustments made to an optical firearm sight, or iron sights, to align the firearm barrel and sights.
This method is usually used to pre-align the sights, which makes zeroing (zero drop at XX distance) much faster.
A straight-wrist grip, typical on English shotguns, built for graceful aesthetics, light weight and fast handling.
The wearing away of a barrel's metal surface by a bullet or shot charge or by the heat of powder gases.
The charge used to ignite the propelling charge.
A strong spring which activates the striker or hammer of a firearm.
Slang word abreviation for Ammunition.
A bolt action which is locked by pressing the bolt handle in and down, thereby turning its locking lugs into the receiver.
A shotgun shooting sport in which the competitors attempt to break aerial targets directed toward them or crossing in front of them from different angles and elevations. It is an Olympic shooting sport.
An early form of complete, self-contained cartridge. It included bullet, powder and ignition primer, all in one package.
The primer was located towards the base of the cartridge, but completely internally. The pin, shaped like a little finishing nail,
pointed on the inside end and resting on the internal primer, projected radially about a quarter-inch to the outside of the base of
the cartridge. When loaded, a pinfire gun showed the tips of the pins exposed through small slots in the tops of the breech faces of the barrels.
To fire, hammers fell on the pins, driving them (through the wall of the cartridge) into the internal primer.
The part of a flintlock action that receives the blow of the flint-tipped hammer, which then yields tiny molten fragments of steel
,sparks, which fall into the flashpan, igniting the priming charge and thence, through the touchhole, the main charge.
Anything that will safely stop a bullet and prevent it from hitting anything else after the target is struck.
A double-action semi-automatic firearm which is designed to have a much lighter trigger pull than is usual for a double action.
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