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 speed at which a projectile travels. Velocity is usually measured in feet per second or metres per second.
Abbreviation for Long Rifle. Typically used in the .22 caliber cartridge designation .22LR. However can be used as an abbreviation for Kentucky Long Rifle
The thumb-piece on the top rear of the hammer that enables it to be manually drawn back to full cock.
A firearms manufacturer started by Samuel Colt in 1855. Colt is most famous for the revolvers they invented and built in the 1800's and
the semi-automatic pistol model 1911 designed by John Moses Browning, and for being the first manufacturer of the AR-15 type rifles.
The sliding metal dowel located at the muzzle end of a revolver cylinder.
After firing, the shooter opens the cylinder and depresses the front end of the ejection rod, which forces the empty cases out of the cylinder.
A type of ammunition that utilizes a projectile or projectiles that contain a compound in its base that burns during its flight to provide a visual reference of the projectile's trajectory.
A semi-automatic firearm whose breechblock and barrel are not mechanically locked together when fired.
In such case the breechblock immediately begins to separate from the barrel upon firing.
Blowback is used in comparatively low powered weapons, in which inertia of the breechblock, and cartridge wall adhesion against the chamber,
are sufficient enough to retard opening until breech gas pressures have fallen to a safe level.
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.
Abbreviation for 'Bad Guy'
The superheated air created by burning powder. A gas-operated firearm is one that uses the energy from these superheated gases to work the action in semi-automatic and automatic guns.
The Glock pistol, sometimes referred to by the manufacturer as a Glock "Safe Action" Pistol, is a series of polymer-framed, short recoil operated, locked breech semi-automatic pistols designed and produced by Glock Ges.m.b.H., located in Deutsch-Wagram, Austria.
In a shotgun barrel, A tapered area a few inches from the breech end, providing a transition between the chamber
(approximately the diameter of the outside of a shotgun shell) to the bore proper (approximately the diameter of the inside of a shotgun shell).
The forcing cone provides the transition between the exterior and the interior diameters of the cartridge.
Older shotguns usually have more abrupt forcing cones suitable for then-current thick-walled paper shells with fibre wads.
Newer shotguns usually have more gradual, longer forcing cones suitable for thinner modern plastic shells with obturating plastic shot-cup wads.
To hit someone with the grip of a pistol.
Sometimes also known as a
slide release or
On a semi-autmatic gun, the lever or catch that holds the slide open (after the last round is fired or when racking an empty gun).
Typically they are located on the left side of the frame about mide barrel. Some of the newer semi-automatic pistols have an
internal slide lock. Even though on pistols with an external slide catch, you can push down on the lever to release the slide,
it should never be used in such a manner. The proper way to release the slide is to rack the slide.
An armor-piercing shell must withstand the shock of punching through armor plating. Shells designed for this purpose
have a greatly strengthened case with a specially hardened and shaped nose,
and a much smaller bursting charge.
Short, interchangeable cylinders, of
subtly different internal tapers, that screw into a threaded recess at the muzzle of a
shotgun. By inserting different choke tubes, one can alter the shot pattern thrown by the
A three-barrel gun.
Typically it has two shotgun barrels side by side on the top, with a third rifle barrel underneath.
This provides a very versatile firearm capable of taking winged animals as well as big game.
It also is useful in jurisdictions where a person is only allowed to own a single firearm.
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
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