The Definition of Caliber
The diameter of the bore of a firearm measured as a fraction of an inch.
Although such a measurement may be frequently stated in millimeters.
It is correctly expressed as ".40 caliber" (note the decimal point) or as "10 millimeter"
(without "caliber" or the leading decimal point). Caliber numbers when used to identify the size of the
bullet a gun will file are usually followed by words or letters to create the complete name of the cartridge.
These letters often represent a brand name or an abbreviation for the name of the company that first introduced the round.
19 Other Firearms Definitions You Need To Know
An attachment to or integral part of the barrel that redirects some of the pressurized gas that propelled the bullet out
the muzzle to the sides and possibly rearwards from the direction of the bullet travel. This reduces the recoil of the firearm.
Refers to a visible dark ring created by the primers in centerfire ammunition around the firing pin hole in the frame after much use.
The degree to which the barrel(s) of a break-open gun drop down; the size of the opening space,
which should be sufficient to allow for ease of loading, unloading and properly-functioning ejection.
A good gape is easier to achieve on a side-by-side than an over & under where the bottom barrel is well-enclosed by the action body.
A type of firearm action in which the guns's bolt is operated manually by the opening and closing of the breech (barrel) with a small handle.
As the handle is operated, the bolt is unlocked, the breech is opened, the spent shell casing is withdrawn and ejected,
the firing pin is cocked, and finally a new round/shell (if available) is placed into the breech and the bolt closed.
In shotgunning, multiple pellets contained in the shell and sent downrange when the shotgun is fired.
A method of building a pair of barrels where the entire breech end of both barrels and the lumps together are machined
from one solid piece of steel. The barrel tubes are then fitted separately into this monoblock and the ribs attached.
Often identifiable by a distinctive ring around the barrels about three inches in front of the breech end.
The favored jointing method of the Beretta company. An incorrect euphemism for sleeved barrels.
Hearing protection that completely covers both ears and is usually attached to a headband.
A short, lightweight rifle. Some are small enough for a young child to easily handle, while others are large enough to perfectly suit teenagers, average-sized adult women, and small-statured adult males.
In a handgun that does not have a hammer, the striker is a linear driven, spring loaded cylindrical part which strikes the primer of a chambered cartridge.
The striker replaces both the hammer and firing pin found in hammer driven pistols.
An inexact, non-technical term indicating a magazine holding more rounds than might be considered "average.".
A small piece of leather or cloth. A patch can refer to the wadding used in loading a muzzle loading firearms or the piece of cloth used to clean a firearm bore.
Any exercise in which a realistic scenario for the use of specific equipment is simulated.
In the popular lexicon this is applied primarily to tests of weapons or weapon systems that are associated with
the various branches of a nation's armed forces, although the term can be applied to the civilian arena as well.
A tube, usually metal, through which a controlled explosion or rapid expansion of gases are released in order to propel a projectile out of the end at a high velocity.
It is the tube through which the bullet or shot travels. The barrel serves the purpose of providing direction and velocity to the bullet.
The top of the butt-end of a gun stock.
The bottom of the butt-end of a gun stock.
There are a lot of different competitions and other games which involve firearms. These are all referred to collectively as the shooting sports.
A mechanical safety that prevents a gun from firing when it is unintentionally dropped.
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