The Definition of Hinge Pin
A short cylindrical rod of hardened steel running laterally near the front of the bar of a break-open gun's
action around which the barrel hook revolves when the gun is opened. Over the decades, this pin and its
complimentary hook can wear and a gun can sometimes "shoot loose" or "come off the face." The proper cure
for this condition is to replace the hinge pin with a new one, slightly oversized, to compensate for wear
on both itself and on the barrel hook.
19 Other Firearms Definitions You Need To Know
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.
A popular term for a short barreled repeating shotgun as frequently used in law enforcement and personal protection.
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).
Also spelled Forend.
That part of the stock forward of the action and located below the barrel or barrels.
It is designed to give the shooter a place to hold the front end of the gun and protects the shooter's hand from getting burned on the hot barrel.
A mechanical safety that prevents a gun from firing when it is unintentionally dropped.
A long gun stock that may be doubled over for conveniently compact storage.
A type of backstop that catches the fired bullet and prevents it from exiting the area. Bullet traps are most commonly used on indoor ranges.
Refers to a visible dark ring created by the primers in centerfire ammunition around the firing pin hole in the frame after much use.
Plugs of hardened steel, precisely machined in relation to the standard dimensional specifications of a given cartridge,
normally in sets of three: "GO", "No-Go" and "Field". By loading these plug-gauges into the chamber in succession,
one can check that the action should close on the "Go" gauge. It should not close on the "No-Go" gauge,
but might were enough force to be used. And, it absolutely should not close on the "Field" gauge.
A deluxe set of several different associated weapons, being any combination of rifle, shotgun, various handguns, and possibly a knife or two, cased together with appropriate cleaning and loading tools.
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.
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.
A swing-out arm on a revolver, to which the cylinder is
mounted when opened facilitates loading and cleaning.
A built in lock that may prevent the firearm from being fired.
The amount of rearward force exerted by the propellant gases on the bolt or breech of a firearm action or breech when a projectile is fired.
The applied force has both magnitude and direction, making it a vector quantity.
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.
The process of a bullet expanding under pressure to fit the bore of the firearm, or a cartridge case expanding under pressure to seal the chamber.