The Definition of Group
A set of holes in a target left by a succession of bullets fired from the same rifle or handgun,
using the same ammunition and sight setting. Fired (within the limits of one's marksmanship ability)
to determine the inherent accuracy of the rifle/ammunition combination,
and to aid in the proper adjustment of the sights.
19 Other Firearms Definitions You Need To Know
A Muzzleloading long gun which has a completely smooth bore and is intended to fire a single projectile rather than a collection of shot.
A repeating firearm in which the ammunition is held in a multi-chambered cylinder, which is rotated to bring each chamber in line with
the barrel. Most revolvers are handguns, although shoulder-fired arms have been made using this sort of mechanism.
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.
A name for any palm sized handgun which fires a small caliber.
The housing for a firearm's breech (portion of the barrel with chamber into which a cartridge or projectile is loaded) and firing mechanism.
In semi-automatic handguns and revolvers, this part is typically called the frame.
Abbreviation for Double Action/Single Action. A type of firearm that is designed to operate in double action on the first shot, and in single action on the second and subsequent shots.
The Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF, BATF, and BATFE) is a federal law enforcement organization within the United States Department of Justice. Its responsibilities include the investigation and prevention of federal offenses involving the unlawful use, manufacture, and possession of firearms and explosives; acts of arson and bombings; and illegal trafficking of alcohol and tobacco products. The ATF also regulates via licensing the sale, possession, and transportation of firearms, ammunition, and explosives in interstate commerce. Many of ATF's activities are carried out in conjunction with task forces made up of state and local law enforcement officers, such as Project Safe Neighborhoods. ATF operates a unique fire research laboratory in Beltsville, Maryland, where full-scale mock-ups of criminal arson can be reconstructed.
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.
Sloppy movement (slack) of a trigger before the actual point of let-off.
The National Rifle Association. This organization coordinates shooting events on a national level, provides firearms training to civilians and law enforcement,
fights restrictive firearms legislation and supports the constitutional right of law abiding citizens to own and carry firearms.
A device on a firearm which, when operated, results in the hammer or striker being cocked or moved to the ready position.
A device, incorporated into the design of most firearms actions that, when engaged, should prevent the discharge of the firearm.
Some safeties are more positive than others. A safety device is not a perfect substitute for the general principles
of responsible gun handling. Never point a gun in a direction you do not intend to shoot
A series of projections on the bolt of a firearm designed to fit into corresponding slots in the receiver to lock the action in closed position for firing.
A spring-loaded hinged front trigger on a dual trigger side by side or over under shotgun, built to cushion its impact on one's trigger finger as the gun recoils when the rear trigger is pulled.
The Glock pistol, sometimes referred to by the manufacturer as a Glock "Safe Action" Pistol, is a series of polymer-framed, short recoil operated, locked breech semi-automatic pistols designed and produced by Glock Ges.m.b.H., located in Deutsch-Wagram, Austria.
The distance the trigger must travel before it reaches the break point and fires the gun.
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 rifle with a relatively short barrel.