Drum Magazine
A type of firearms magazine that is cylindrical in shape, similar to a drum. Probably the most recognizable drum magazine is the magazine for a Thompson carbine rifle, also known as the Tommy Gun.
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Letter DThe Definition of Drum Magazine![]() Drum MagazineA type of firearms magazine that is cylindrical in shape, similar to a drum. Probably the most recognizable drum magazine is the magazine for a Thompson carbine rifle, also known as the Tommy Gun. 19 Other Firearms Definitions You Need To KnowHammer SpurThe thumb-piece on the top rear of the hammer that enables it to be manually drawn back to full cock. Caseless AmmunitionA type of small arms ammunition that eliminates the cartridge case that typically holds the primer, propellant, and projectile together as a unit. Flat NoseA bullet shape with a flat nose rather than a rounded one. Light Double ActionA double-action semi-automatic firearm which is designed to have a much lighter trigger pull than is usual for a double action. Double RifleTwo independent rifles, built on one frame, designed to allow two virtually instantaneously quick, totally reliable shots. The barrels may be arranged either side-by-side or over-and-under. The apogee of the gunmaker's art. Particularly useful against dangerous game, which may be moving, and in your direction, with vengeance on its mind. Open Tip MatchA rifle projectile made with the tip of the bullet open as a means of increasing accuracy as compared to standard military bullets that are made with a closed tip and an open base. The are not designed to expand like a hollow point bullet but may fragment. Self-OpeningAttribute of a break-open gun whereby the barrels drop down simply by pressing the toplever without muscling them open manually. The Holland & Holland system utilizes a coil spring within a cylindrical housing mounted just ahead of the forward lump to urge the barrels open. The Purdey system utilizes residual energy remaining in the mainspring after the gun has been fired. Both systems enable a shooter to load more quickly when birds are coming fast. Soft PointA metal jacketed bullet design in which the nose of the core of the bullet is exposed to ensure the expansion of the bullet upon impact. Often abbreviated "JSP" or "SP." They tend to expand more slowly than a Hollow Point bullet and are used where deeper penetration and expansion are needed. CFPAbbreviation for Concealed Firearms Permit. Breech PressureThe 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. This is also known as Bolt Thrust on firearms that are Bolt Action Long GunAnother term for rifle. Locking LugsA 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. ARContrary to some people's belief, AR does NOT stand for Assault Rifle. The designation AR stands for the original designing company ArmaLite.
Thumb SafetyAn external, manual safety which is typically disengaged with the firing-hand thumb. BarrelA tube, usually metal, through which a controlled explosion or rapid expansion of gases are released in order to propel a projectile out of the end at a high velocity. It is the tube through which the bullet or shot travels. The barrel serves the purpose of providing direction and velocity to the bullet. Bolt ActionA 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. Picatinny RailA metal bar, available in a variety of lengths, with a continuous row of Weaver-like scope mount base slots, which when attached to a firearm, allow convenient attachment of a variety of sights, lights, slings, bipods and other accessories designed to fit this standard system. StrikerIn 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. Turk's HeadA tip for a cleaning rod, a jag, with spirally-radial wires for vigorously scrubbing a gun's bore. |
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