The Definition of Plus P
Also spelled "+P" or "P+".
Is small arms ammunition that has been loaded to a higher internal pressure than standard for it's caliber.
Many calibers are available in both standard and +p or +p+ variants. Ammunition marked +p produces more power
and higher pressures than the standard ammunition. Not all firearms are designed to handle the increased
pressure consult your owner's manual or gun manufacturer before using +P ammunition.
19 Other Firearms Definitions You Need To Know
A machine gun that is designed to be carried and opperated by a single person.
A shotgun with two barrels, usually of the same gauge or bore.
The two types of double-barreled shotguns are over/under (abbreviated as O/U or OU),
in which the two barrels are stacked on top of each other, and side-by-side (abbreviated as SxS),
in which the two barrels sit beside each other. See photo at right for example of side-by-side double-barreled shotgun.
For double-barreled guns that use one shotgun barrel and one rifle barrel, see combination gun.
A trigger that breaks from an extremely light touch.
A small hole in the barrel of a gas-operated firearm through which expanding gases escape to power the autoloading system.
Any substance (TNT, etc.) that, through chemical reaction, detonates or violently changes to gas with accompanying heat and pressure.
The face of the action of a break-open firearm which houses the firing pins and receives the direct recoil of the fired round.
The amount of work done by a bullet, expressed in foot pounds.
Commonly shortened to mag pouch, this is a device to hold extra magazines which fastens to the shooter's belt.
Markings impressed into the base of a cartridge case, normally identifying the maker's name, the cartridge calibre designation, and sometimes the date.
An inert ammunition-shaped object, used in practice to simulate misfeeds and other malfunctions and also used in dry fire practice.
Unlike a blank, a dummy round contains no charge at all.
A snap-cap is a type of dummy round.
A mechanical safety that prevents a gun from firing when it is unintentionally dropped.
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.
An underpowered powder charge, usually caused by a fault in cartridge loading, often insufficient to expel a projectile from the muzzle of a firearm.
If such a blockage is not cleared, the next attempted shot could cause the barrel at least to bulge, and very possibly to burst.
This means a shooter who is right-handed but left-eyed, or left-handed and right-eyed.
A trigger that doesn't have to travel very far before it reaches the break. In a 1911 semi-auto pistol, a short trigger is a different part than a long trigger,
and (in addition to providing less motion) it features a shorter reach which may be of benefit to a small-handed shooter.
Sloppy movement (slack) of a trigger before the actual point of let-off.
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