The Definition of Recoil Spring
The recoil spring is the powerful spring that cushions the slide in its rearward travel and then sends the slide forward again with enough force to drive the fresh round firmly into the chamber.
The strength of the recoil spring is calibrated to run the slide without any outside assistance.
19 Other Firearms Definitions You Need To Know
The distance travelled by a projectile from the point where it strikes the target to the point where it stops.
Abbreviation for Caliber.
A type of shotgun ammunition which uses very small pellets with individual projectiles of less than .24" in diameter
designed to be discharged in quantity from the shotgun. The size of the shot is given as a number or letter--
with the larger number the smaller the shot size. It is so named because it is most often used for hunting birds.
The finest size generally used is #9 which is approximately .08" in diameter and the largest common size is #2 which is approximately .15"
A firing mode enabling the shooter to fire a predetermined number of rounds with a single pull of the trigger.
A metal jacketed bullet design in which the nose of the core of the bullet is exposed to ensure the expansion of the bullet upon impact.
Often abbreviated "JSP" or "SP." They tend to expand more slowly than a Hollow Point bullet and are used where deeper penetration and expansion are needed.
This is the area in the barrel that is directly forward of the chamber, which tapers to the bore diameter.
A firearm, usually (but not always) a fully automatic rifle, that uses a ammunition on a belt rather than a magazine to store the rounds that will be loaded into the gun.
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.
Sometimes also known as a
slide release or
On a semi-autmatic gun, the lever or catch that holds the slide open (after the last round is fired or when racking an empty gun).
Typically they are located on the left side of the frame about mide barrel. Some of the newer semi-automatic pistols have an
internal slide lock. Even though on pistols with an external slide catch, you can push down on the lever to release the slide,
it should never be used in such a manner. The proper way to release the slide is to rack the slide.
The ammount pressure needed (measured in pounds) for the trigger finger must put on the trigger before the gun will fire.
Trigger pull weight is measured by the number of pounds and ounces of pressure required to pull the trigger past the break.
A chemical phosphate process developed during the second world war to provide an economical, durable and non-reflective surface finish to military firearms.
A small single-shot or multi-barreled pocket pistol. 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.
An uncomfortable sensation caused by the trigger springing back into the shooter's trigger finger while firing.
A gun with more than one barrel, the most common being the double-barreled shotgun.
This occurs in telescopic sights when the primary image of the objective lens does not coincide with the reticle.Telescopic sights often have parallax adjustments to minimize this effect.
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.
Circular steel fittings, about 1/2 inch in diameter, screwed into the breech face of a gun and through which the firing pins pass.
Firing pin bushings allow the convenient replacement of broken firing pins. They also allow the renewal of an older gun where, over the decades,
leakage of high-pressure gas from corrosive primers has eroded the breech face around the firing pins; and replacing these bushings with new ones,
slightly oversized can compensate for a situation where proper headspace has been compromised.
A slang term for a small inexpensive handgun. Saturday night specials have been defined as compact, inexpensive,
small-caliber handguns with perceived low quality; however, there is no official definition of "Saturday night special" under federal law,
though some states define "Saturday night specials" or "junk guns" by means of composition or materials strength.
Low cost and high availability make these weapons attractive to many buyers despite their shortcomings.