The Definition of Co-Witness Sighting
Co-Witness Sighting is the use of any iron sight mounted onto a rifle that is fitted with an optical sight as a primary sighting system.
They come in two basic configurations, fixed or flip-up. The idea is that if you align your red dot and your iron
sights you have a backup aiming system on the gun.
19 Other Firearms Definitions You Need To Know
The forward end of the bolt which supports the base of the cartridge and contains the firing pin.
A long gun stock that may be doubled over for conveniently compact storage.
The distance that equates the exit pupil size of a rifle scope's
ocular lens to the entrance pupil of the user, in order to achieve the largest, unvignetted view.
This distance must be sufficient to ensure that the ocular rim of the scope does not lacerate the shooter's
eyebrow upon recoil. And, the scope should be positioned so that eye relief is suitable when the rifle is comfortably mounted.
The mechanical sighting system which usually comes with the firearm made of metal with no optics.
The spotter is a helper who gives the shooter guidance on how to hit a particular target.
In some cases the spotter may just report the location of the bullet impact. In other cases they may judge the speed and direction of
the wind, determine the range, and give the shooter the settings to be used on the sights.
From the Latin for "more."
A term indicating a relatively heavily loaded metallic cartridge or shotshell and a gun safely constructed to fire it.
It generally indicates a round which cannot be interchanged with other loadings of the same caliber (for example, a .22 Magnum shell does not fit within a firearm designed to fire .22 Long Rifle ammunition).
The original small single-shot or multi-barreled pocket pistol designed and manufactured by Henry Deringer of Philadelphia.
Derringers (spelled with two Rs) are called that because of the original desinger and anmufactuturer of that
type of gun, Henry Deringer. To get around copyright infringment other designers and manufacturers spell the name with two Rs.
However guns designed and built by Deringer are spelled with only one R
Hearing protection that fits inside the ear canal.
A stout flange, invariably incorporated into the underside of the front receiver ring of a bolt action, and also frequently
incorporated into the underside of the barrel of a heavily-recoiling rifle, which when properly bedded, transfers recoil to the stock.
An extra flange behind the bolt handle, at the rear of a bolt action receiver (notably the Mauser Model 1898),
which uses the bolt handle as an extra locking surface in the extremely unlikely event of forward bolt lug failure.
As in Trapdoor buttplate or Trapdoor Pistol Grip Cap, one of these articles of furniture including a hinged plate,
covering a small compartment below in which may be stored several extra cartridges, sight bits, extra springs or pins, cleaning rod, etc.
A straight-wrist grip, typical on English shotguns, built for graceful aesthetics, light weight and fast handling.
Slang word abreviation for Ammunition.
A wildcat cartridge that is created by straightening out the sides of an existing case and making a sharper shoulder to maximize powder space.
Frequently the neck length and shoulder position are altered as well. The caliber is NOT changed in the process.
A groove or indention around the circumference of a bullet. Its purpose is to permit the cartridge casing to be
crimped tightly against the bullet shank to hold it firmly to the casing. A groove or indention around the
circumference of a bullet. Its purpose is to permit the cartridge casing to be crimped tightly against the
bullet shank to hold it firmly to the casing.
A passage built into a firearm to allow the safe conduct of unexpected gas, as from a pierced primer, to minimize damage both to the gun and to the shooter.
Covered compartment in the buttstock of a rifle used to carry patches or other small items.
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