Arsenal Exchange
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Letter CThe Definition of CCW
19 Other Firearms Definitions You Need To KnowLoading GateThe hinged cover over the opening through which cartridges are inserted into the magazine. Cylinder DrumOn a revolver, a spring activated device housed in the bottom of the frame beneath the cylinder that engages alignment notches in the cylinder. It stops the cylinder's rotation and holds it in place each time a chamber in the cylinder is in alignment with the barrel. Lock SpeedThe same as Lock Time Sporting FirearmAny gun that can be used in a sport. Ghost-Ring SightA type of aperture rear sight with a large opening and a thin rim that seems to fade out when the shooter looks through it. Sometimes installed on rifles and shotguns intended for home defense or police use. Belt FedA 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. BreechblockThe part in the breech mechanism that locks the action against the firing of the cartridge. Selective-FireA firearm's ability to be fired fully automatically, semi-automatically or, in some cases, in burst-fire mode at the option of the firer. ZeroA firearm is said to be "zeroed in" when its sights have been adjusted so that the bullet will hit the center of the target when the sights are properly aligned upon the center of the target. The farthest distance from a firearm at which the bullet's path and the point of aim coincide. This term is also used to mean the process of insuring that the sights of a firearm are properly aligned so that where they indicate the bullet will strike is in fact where it strikes. Gas PortA small hole in the barrel of a gas-operated firearm through which expanding gases escape to power the autoloading system. SPAbbreviation for soft point Riding the SlideRacking the slide incorrectly by allowing your hand to rest upon the slide as it moves forward during the loading procedure. Riding the slide is a common cause of misfeeds and other malfunctions. DramA unit of measure traditionally used for black powder shotgun charges. Today, used for smokeless powders on the basis of the new propellant's equivalent performance to that weight of black powder. Thus, a shotgun shell marked 3 - 1 1/8 would be loaded with the smokeless powder equivalent of 3 drams of black powder, and with 1 ounce of shot. 1 Dram = 1/16 ounce = 437.5 grains. Muzzle EnergyThe power of a projectile or a load of shot at the point that it exits the muzzle of a firearm, normally expressed in foot-pounds. DudA round of ammunition that does not fire. Ejector StarOn a revolver, the collective ejector, manually operated through the center of an opened cylinder, when activated, clears all chambers at once. Low KneelingA shooting position in which one or both knees are touching the ground and the shooter is as low as possible. HeelThe top of the butt-end of a gun stock. JSPAbbreviation for jacketed soft point |
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