The Definition of Recoil Lug
A stout flange, invariably incorporated into the underside of the front receiver ring of a bolt action, and also frequently
incorporated into the underside of the barrel of a heavily-recoiling rifle, which when properly bedded, transfers recoil to the stock.
19 Other Firearms Definitions You Need To Know
The amount of rearward force exerted by the propellant gases on the bolt or breech of a firearm action or breech when a projectile is fired.
The applied force has both magnitude and direction, making it a vector quantity.
An optical sight, offering some magnification, often variable, with some kind of adjustable aiming grid inside (a reticle),
which when mounted on a firearm, usually a rifle, makes sighting easier.
A type of airgun that shoots spherical non-metallic pellets.
The recurved top part of a semi-automatic handgun's grip at the point where it meets the slide. On long guns, the tang is the top strap used to screw the receiver to the stock.
The point of the trigger's return at which the gun's internal mechanisms are ready to fire another round.
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.
A claw [scope] mount with openings through which a shooter can use a rifle's iron sights without removing the scope.
Improper term for a device that cuts down on the noise a firearm makes when it is shot. The correct term is suppressor. Silencers only exist in the movies.
The small lever on a cartridge firearm, which one pulls to cause the spring-loaded firing pin to impact the primer, causing the gun to discharge.
Normally, the trigger simply connects to the sear. Pulling the trigger moves the sear out of its notch, releasing the spring-loaded hammer
to strike the firing pin which in turn strikes the primer; or the coilspring-loaded firing pin directly. Other, often-Germanic systems have their own
miniature lockwork which, when cocked, allows an exceedingly light trigger pull to discharge the firearm, a setting that would be perilous to carry in the field.
The opening in the bottom of the gun into which a box magazine is fed. On a semi-auto handgun,
the magazine well is at the base of the grip; on a rifle, it is usually placed in front of the trigger guard.
A small metal explosive-filled cup which is placed over the nipple of a percussion firearm. As the cap is struck by the hammer, it explodes and sends a flame through the flashhole in the nipple to the main powder charge.
The "packaged" components that are needed in order to fire in a case or shell holding a primer,
(which produces the spark) a charge of propellant (gunpowder) and a projectile (bullets, slug or pellets.)
Sometimes called "fixed ammunition" to differentiate from the individual components placed separately in muzzleloaders.
A single unit of ammunition in modern firearms is called a cartridge. The units of measure for quantity of ammunition is rounds.
There are hundreds of sizes of ammunition, examples include .223 Remington, 9mm Luger, 30.06, .308 Winchester,
.300 Winchester Magnum, and .50 Browning Machine Gun (BMG). The ammunition used must match the firearm.
A tip for a cleaning rod, a jag, with spirally-radial wires for vigorously scrubbing a gun's bore.
There are a lot of different competitions and other games which involve firearms. These are all referred to collectively as the shooting sports.
A type of firearm action in which the guns's bolt is operated manually by the opening and closing of the breech (barrel) with a small handle.
As the handle is operated, the bolt is unlocked, the breech is opened, the spent shell casing is withdrawn and ejected,
the firing pin is cocked, and finally a new round/shell (if available) is placed into the breech and the bolt closed.
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.
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