The Definition of Lug
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.
19 Other Firearms Definitions You Need To Know
A gun with more than one barrel, the most common being the double-barreled shotgun.
A shooting position in which one or both knees are touching the ground and the shooter is as low as possible.
A unit of adjustment for a sight.
The setting on the sights of a firearm that controls the vertical placement and the altitude above mean sea level.
This is important for long range precision shooting because the air density changes with elevation and affects the path of the bullet.
A black powder muzzleloading firearm action which relies upon a serpentine or S-shaped piece of metal to hold a smoldering match.
By pressing the lower end of the serpentine,
the upper end holding the burning match contacts the priming powder in the pan.
To explode with great violence. It is generally associated with high explosives e.g. TNT, dynamite, etc., and not with the relatively slow-burning smokeless gunpowders that are classed as propellants.
National Firearms Act of 1934.
Enacted on June 26, 1934, currently codified as amended as I.R.C. ch. 53, is an Act of Congress in the United States that, in general, imposes
a statutory excise tax on the manufacture and transfer of certain firearms and mandates the registration of those firearms.
The Act was passed shortly after the repeal of Prohibition. The NFA is also referred to as Title II of the Federal firearms laws.
The NFA includes:
- Requires the registration of all fully automatic firearms.
- Requires the registration of all "sawed off" rifles and shotguns.
- Requires the registration of firearm silencers.
- Imposes a $200 transfer tax on the above items.
Italian for "short." Seen as part of a cartridge designation. On some Italian manufactured guns that use .380 ACP, the designated caliber is 9mm Corto (9mm Short), which is also the same as the German 9mm Kurtz
A sidelock action where the mainspring is mounted rearward towards the butt.
The back action is often used in double rifles where the need for strength requires as
little steel as possible be removed from the bar of the action.
A process that increases the diameter of a workpiece by compressing its length.
A hammerless single shot action type whereby a breech-block, hinged at the upper rear, operated by an underlever, tilts downward to expose the chamber.
A method of building a pair of barrels where the entire breech end of both barrels and the lumps together are machined
from one solid piece of steel. The barrel tubes are then fitted separately into this monoblock and the ribs attached.
Often identifiable by a distinctive ring around the barrels about three inches in front of the breech end.
The favored jointing method of the Beretta company. An incorrect euphemism for sleeved barrels.
The rear end of a rifle or shotgun. (The portion that rests against the shoulder.)
The diameter of the bore of a firearm measured as a fraction of an inch.
Although such a measurement may be frequently stated in millimeters.
It is correctly expressed as ".40 caliber" (note the decimal point) or as "10 millimeter"
(without "caliber" or the leading decimal point). Caliber numbers when used to identify the size of the
bullet a gun will file are usually followed by words or letters to create the complete name of the cartridge.
These letters often represent a brand name or an abbreviation for the name of the company that first introduced the round.
A second, folding or pop-up front sight bead of larger than usual size, perhaps not as accurate as a normal fine bead, but easier to see in the gloaming (twilight) or dawn.
The process of assembling cartridge case, bullet or shot, wads and primer to produce a complete cartridge with the use of
hand tools in the interest of loading for firearms for which cartridges are not available, experimenting with loads
to achieve better performance, or to save money. Not to be attempted without knowledgeable instruction and careful study of the process.
The beginning of the bore of a rifled firearm. The transition between the chamber and the rifling. The area most vulnerable to erosion from high velocity cartridges.
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