The Definition of Pinfire
An early form of complete, self-contained cartridge. It included bullet, powder and ignition primer, all in one package.
The primer was located towards the base of the cartridge, but completely internally. The pin, shaped like a little finishing nail,
pointed on the inside end and resting on the internal primer, projected radially about a quarter-inch to the outside of the base of
the cartridge. When loaded, a pinfire gun showed the tips of the pins exposed through small slots in the tops of the breech faces of the barrels.
To fire, hammers fell on the pins, driving them (through the wall of the cartridge) into the internal primer.
19 Other Firearms Definitions You Need To Know
A bullet not covered by a metal jacket or patch.
Abbreviation for Concealed Carry License.
A type of firearm capable of discharging multiple individual shots in sequence, fed from a magazine, via the operation a lever, bolt, slide or some other form of manual operation.
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.
A shoulder-held firearm that has two barrels; one rifle barrel and one shotgun barrel.
Most combination guns are of an over/under design (abbreviated as O/U), in which the two barrels are stacked vertically on top of each other,
but some combination guns are of a side-by-side design (abbreviated as SxS), in which the two barrels sit beside each other.
Anything a person can hide behind that will probably stopp a bullet.
A short stock, often ideally sized for teenagers, average-sized adult women, and small-statured adult males.
Being aware of and responsible of which direction your firearm is pointed at all times, and always keeping it pointed in a safe direction.
The length, within a rifled barrel, required to accomplish one full rotation. 1:12 Twist, means a bullet passing down the bore would complete one revolution in twelve inches.
1:7 Twist, means a bullet passing down the bore would complete one revolution in seven inches, which makes it a tighter twist than 1:12.
Different weights of bullet require appropriate rates of twist.
A semi-automatic is said to be out of battery when the slide fails to come all the way forward again after the
gun has fired. This condition can be created by a misfeed, a dirty gun, weak springs, the shooter's
thumbs brushing against the slide, riding the slide, or any of several other causes.
A firearm that automatically loads the next cartridge to be fired into the chamber either upon the pull of the trigger in an open bolt design or upon the firing of the previous round in a close bolt design.
Autoloader should not be confused with Automatic or Semi-Automatic since the term Autoloader only applies to how the next round is chambered not
how many rounds can be fired per trigger pull.
All Automatic and Semi-Automatic firearms are autoloaders. Revolvers, bolt action, lever action and pump action firearms are not autoloaders.
A chemical phosphate process developed during the second world war to provide an economical, durable and non-reflective surface finish to military firearms.
Slang for a shotgun which is set up specifically to fire a slug (a large, single projectile) rather than shot (multiple projectiles contained within a single shell).
Damage that is unintended or incidental to the intended outcome.
An action type that when the trigger is pulled, the only thing the trigger does is drop the hammer (or striker).
This applies to both revolvers, semi-automatic and automatic guns.
On a single action revolver, the gun must be manually cocked before it can be fired.
With semi-automatic and automatic guns that are single action, the only thing the trigger does is drop the hammer, striker or firing pin onto the cartridge.
Then the firearm is cocked again when from the recoil of the fired round.
A firearm that the gun is cocked and the hammer drops when the trigger is pulled is a double action gun.
A small metal tube extending through the breech of a percussion firearm through which the flame passes from the percussion cap to fire the powder charge.
A heat-treating process that incorporates carbon into the surface molecular
structure of the steel, providing a hard-wearing surface without making the entire
receiver brittle. The parts to be casehardened are packed in a crucible with
carbon-rich media such as bone meal and charcoal, heated to bright orange, about
1800°F, then quenched in bubbling oil. Also
Front, metal, part of a handgun's grip, which together with the backstrap, provides a mounting frame for the grip panels.
A short, lightweight rifle. Some are small enough for a young child to easily handle, while others are large enough to perfectly suit teenagers, average-sized adult women, and small-statured adult males.