Letter B

The Definition of Breechloader

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Breechloader

A firearm loaded through the breech.


19 Other Firearms Definitions You Need To Know


FPS

Abbreviation for feet per second. A term used in expressing the velocity of a bullet.

Dud

A round of ammunition that does not fire.

Every Day Carry

Term used for a firearm that a person uses as their usual daily carry gun. It is also used to describe a gun that is good for carrying concealed on a regular basis. Factors for determining an EDC may include caliber, physical size, number of rounds, accuracy and/or other factors.

Tracer

A type of ammunition that utilizes a projectile or projectiles that contain a compound in its base that burns during its flight to provide a visual reference of the projectile's trajectory.

Pepperbox

An early form of muzzle-loading revolver wherein, instead of the current practice of having one barrel mated to a multi-chambered rotating cylinder, multiple joined barrels revolve together around a central axis.

Percussion Cap

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.

Collateral Damage

Damage that is unintended or incidental to the intended outcome.

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.

Youth Stock

A short stock, often ideally sized for teenagers, average-sized adult women, and small-statured adult males.

WCF

Abbreviation for Winchester Centerfire.

Half Cock

A middle position for an external hammer that effectively provides a safety function. With a firearm with non-rebounding hammers, when on half-cock, the firing pin will not rest on the firing-pin.

Fixed Ammunition

A complete cartridge of several obsolete types and of today's rimfire and center-fire versions

OTM

Abbreviation for Open Tip Match.

Sniper

A military person designated as a special marksman who is used to shoot designated targets of opportunity at long range.

Point Blank Range

The farthest distance that a target of a given size can be hit without holding over or under with the sights. The exact range is determined by the performance of the cartridge used, the ZERO range, and the accepted size of the target area. This term is not to be confused with point blank shooting.

Magazine Disconnect

Another term for Magazine Safety

Cast On

An offset of a gun stock to the left, so that the line of sight aligns comfortably with the left eye while the butt of the stock rests comfortably on the left shoulder. Almost all left-handed shooters benefit from a little caston and most custom built guns are made this way. The only question is how much. The caston of a gun is about right when, with the gun comfortably mounted, the front bead lines up with the center of the standing breech.
A stock offset to the right, for shooting from the right shoulder is said to be

Tang

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.

Trigger Bar

On a semi-automatic pistol, or any other firearm in which the trigger is at some distance from the sear, this is an intermediate piece connecting the two parts.