The Definition of Accidental Discharge
An unexpected and undesirable discharge of a firearm caused by circumstances beyond the control of the participant(s) such as a mechanical failure or parts breakage.
There are very, very few firearms related "accidents" and if the "Three Rules" are followed there will hopefully be no injury.
Accidental Discharge should not be confused with "Negligent Discharge".
19 Other Firearms Definitions You Need To Know
A lever on a break-open gun mounted to the top of the receiver which, when pushed with the thumb (normally) to the right, operates (usually) a
Scott Spindle, which in turn withdraws (usually) a Purdey Underbolt from the bites in the lumps of the barrels,
allowing them to hinge downwards and the gun to open.
A internal locking device built into a firearm, usually operated with a key, to render it unable to be fired. A good example of a internal trigger lock are the ones found on the
semi-automatic pistols manufactured by Bersa.
Firearms which are of special interest to collectors by reason of some quality
other than is associated with firearms intended for sporting use or as offensive or
defensive weapons. To be recognized as curios or relics, firearms must fall within one of
the following categories:
A special Curios or Relics license is available from the BATF, which allows collectors to buy eligible firearms in interstate commerce.
- Firearms which were manufactured at least 50 years prior to the current date, but not
including replicas thereof;
- Firearms which are certified by the curator of a municipal, State, or Federal museum
which exhibits firearms to be curios or relics of museum interest; and
- Any other firearms which derive a substantial part of their monetary value from the fact
that they are novel, rare, bizarre, or because of their association with some historical
figure, period, or event. Proof of qualification of a particular firearm under this
category may be established by evidence of present value and evidence that like firearms
are not available except as collector's items, or that the value of like firearms
available in ordinary channels is substantially less.
A barrel without rifling. Smooth bore barrels are commonly used in shotguns and in large bore artillery that fire fin stabilized projectiles.
The portion of the receiver which is threaded so the barrel can be attached to it.
A sliding bar, running longitudinally through the watertable of a break-open side-by-side gun's action, with openings through which the
lumps of the barrels pass when the gun is closed. Under spring tension, this bar moves forward when the opening control is released and its
two locking surfaces engage complementary slots (bites) in the rear of the two barrel lumps. Originally operated by a hinged tab in front
of the trigger guard. Now invariably operated by a cam from Scott's [toplever] spindle. Most modern side-by-side guns lock closed in this manner.
A shooting sport that simulates the use of a small arm in its intended role either as a tool for hunting or personal defense.
True practical shooting limits the small arms, ammunition, and accessories used to those items that would actually be used in the role simulated.
The speed of a projectile or a load of shot at the point that it exits the muzzle of a firearm, normally expressed feet per second.
A double-barrel shotgun, with relatively tight choke boring and a relatively high-combed stock used for shooting live pigeons
(euphemistically known as flyers) which normally rise when released. To better absorb recoil, a pigeon gun is normally heavier than
a field gun as one shoots heavy loads and walks only a little. Because of the inevitable expense of this shooting discipline,
pigeon guns are often built to a high standard of quality and reliability in deluxe grades with highly figured walnut stocks and fine engraving.
A device used (usually set on a counter) to support a shooters arms and/or hands to help make steadier shots.
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
The hinged cover over the opening through which cartridges are inserted into the magazine.
Smith & Wesson term for a revolver grip design introduced in the 1930s where the top of the grip extends higher than it had in earlier configurations, to provide a more comfortable hold.
The angle of the butt of a gun in relation to the line of sight.
Pitch is measured by resting the gun with its butt flat on a floor, the top of the receiver against a wall and its muzzle pointing up.
The distance of the muzzle from the wall is the gun's pitch down.
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.
The forward portion of a bottlenecked cartridge case. Also the portion of a rifle chamber in which the neck of the cartridge case rests.
A small metal cup that contains a tiny explosive charge that is sensitive to impact.
A primer is placed in the base of a shell casing to ignite the powder of the completed cartridge.
It is detonated by the striking of a firing pin in the firearm.
Any piece that projects from a firearm for the purpose of attaching something to it.
For example barrel lugs are used to attach a break-action shotgun barrel to the action itself.
If the firearm is a revolver, the term may also refer to a protrusion under the barrel that adds weight,
thereby stabilizing the gun during aiming, mitigating recoil, and reducing muzzle flip. A full lug extends all the way to the muzzle,
while a half lug extends only partially down the barrel. On a swing-out-cylinder revolver, the lug is slotted to accommodate the ejector rod.
Is when the outline of the concealed handgun may be discerned through the outer clothing.
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