Letter Z Firearms Glossary
A firearm is said to be "zeroed in" when its sights have been adjusted so that the bullet will hit the center of the target
when the sights are properly aligned upon the center of the target. The farthest distance from a firearm at which the bullet's path and the point of aim coincide.
This term is also used to mean the process of insuring that the sights of a firearm are properly aligned so that where they
indicate the bullet will strike is in fact where it strikes.
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.
18 Other Firearms Definitions You Need To Know
The portion of the receiver which is threaded so the barrel can be attached to it.
Yanking the trigger back abruptly, thus pulling the muzzle of the gun downward at the moment the shot fires.
In the Modern Isosceles
the feet are roughly shoulder width apart, with the gun-side foot closer to the target than the off-side foot.
The knees are flexed, and the entire body leans slightly toward the target. The shoulders are closer to the target than the hips, and the hips are more forward than the knees.
The shoulders are rotated forward and the head, rather than being upright, is vultured down behind the sights.
The entire body thus has an aggressively forward appearance, and is poised to move quickly if necessary.
System of measurement for the internal bore diameter of a smooth-bore firearm based on the diameter of each of that
number of spherical lead balls whose total weight equals one pound.
The internal diameter of a 12 gauge shotgun barrel is therefore equal to the diameter of a lead
ball weighing 1/12 pound, which happens to be .729" (Or in British: Bore.) The Gauge/Bore system is also used, by convention, to describe the internal barrel diameter of large-bore,
19th century, English, single-shot and double-barrel rifles.
This is the maximum overall length the cartridge can be (and is expected to be) in order to function properly in magazines and the mag well of a bolt action rifle.
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.
A cable with a padlock at the end. It is threaded through the action of the firearm rendering the gun safe and useless until the lock is removed.
A stun grenade, also known as a flash grenade, is a non-lethal explosive device used to temporarily disorient an enemy's senses.
It is designed to produce a blinding flash of light and intensely loud noise "bang" of greater than 170 decibels (dB)
without causing permanent injury. It was first developed by the British Army's SAS in the 1960s.
The flash produced momentarily activates all photoreceptor cells in the eye, making vision impossible for approximately five seconds,
until the eye restores itself to its normal, unstimulated state. The loud blast is meant to cause temporary loss of hearing,
and also disturbs the fluid in the ear, causing loss of balance.
The concussive blast of the detonation can still injure, and the heat created can ignite flammable materials such as fuel.
The fires that occurred during the Iranian Embassy siege in London were caused by stun grenades.
A trigger system designed by Remington Arms Company.
A rifle with a relatively short barrel.
A steel ring, around an inch in diameter, mounted to a stud, usually on the left side of the receiver of a carbine,
to which may be tied a leather thong to secure it to a saddle or a scabbard so as not to lose the carbine when riding a rambunctious horse.
Shrinking the neck of an existing cartridge to make it use a bullet of a different caliber. A typical process used in the creation of wildcat cartridges.
A mechanical safety that prevents a gun from firing when it is unintentionally dropped.
On semi-auto matic pistols, a lever that mechanically lowers the hammer without firing the gun.
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.
A semi-automatic pistol in which the barrel and breechblock are locked together for only a short distance of rearward recoil travel,
at which point the two are uncoupled, the barrel is stopped and the breechblock continues rearward, extracting the spent casing from the chamber.
Upon returning forward, the breechblock chambers a fresh round and forces the barrel back into its forward position.
Most modern recoil operated semi-automatic pistols use short recoil.
A hammerless single shot action type whereby a breech-block, hinged at the upper rear, operated by an underlever, tilts downward to expose the chamber.
An oversized, lightweight housing that allows a sub-calibre projectile to be fired in a larger-diameter bore, usually in the interest of increased velocity.
The sabot falls away from the actual projectile upon exiting the muzzle.
For example, a hunter could use his .30-30 deer rifle to shoot small game with .22 centerfire bullets.
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