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
The farthest distance that a target of a given size can be hit without holding over or under with the sights.
The exact range is determined by the performance of the cartridge used, the ZERO range, and the accepted size of the target area.
This term is not to be confused with point blank shooting.
A plain, functional, unembellished firearm used to hunt in rough terrain where one might prefer not to put a more expensive, deluxe grade gun at risk of damage.
Two shots fired in rapid succession. It is different from a double tap because in a controlled pair,
the second shot will be fired after the shooter has obtained a second sight picture,
whereas in a double tap both shots are fired based upon the initial sight picture alone.
A trigger that can be easily adjusted by the user. Adjustable triggers are common on specialized target-shooting firearms.
The part of the trigger mechanism which holds the hammer or striker back. Pressure on the trigger causes the sear to release the hammer or striker, allowing it to strike the firing pin and discharge the weapon.
Any type of accessory that can be attached to a firearm's rail.
An underpowered powder charge, usually caused by a fault in cartridge loading, often insufficient to expel a projectile from the muzzle of a firearm.
If such a blockage is not cleared, the next attempted shot could cause the barrel at least to bulge, and very possibly to burst.
Abbreviation for Concealed Carry Permit.
The mechanical sighting system which usually comes with the firearm made of metal with no optics.
Some triggers can be pulled slightly backwards before the shooter can feel any tension and before
the hammer or striker begins to retract. Pre-travel is any movement of the trigger that begins before the trigger starts to engage.
Common term for federally restricted "short-barreled shotgun (rifle)" as with a conventional shotgun with barrel less than 18" (rifle less than 16") or overall length less than 26.
A rifle front sight with a extra-large, folding bead. Typically, in addition to the normal fine bead (which allows for more precision) the larger bead,
while at a cost of potential accuracy, is more readily acquired in marginal light. Also called a Gloaming sight
Abbreviation for Double Action Only. Is a type of firearm in which the firing mechanism cannot be cocked in a single-action stage. Firing always occurs as a double-action sequence where pulling the trigger both cocks and then fires the gun.
A rear barrel sight base, more articulated than having the sight simply dovetailed into the barrel, but not requiring as much gunsmithing as having it mounted onto a proper quarter-rib.
A popular term for a short barreled repeating shotgun as frequently used in law enforcement and personal protection.
The thumb-piece on the top rear of the hammer that enables it to be manually drawn back to full cock.
A two-barreled, side-by-side, shoulder-fired gun having one
smoothbore shotgun barrel and one rifled barrel.
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