Abbreviation for Course of Fire.
The Definition of COF
Abbreviation for Course of Fire.
19 Other Firearms Definitions You Need To Know
A plate which covers the butt. Some steel buttplates have trap doors covering a recess for storage of cleaning equipment.
There are a lot of different competitions and other games which involve firearms. These are all referred to collectively as the shooting sports.
The 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.
A pair of small dovetailed steel bases, screwed usually one to the barrel and one to the front receiver ring of a rifle, to accept mounts for target scopes such as the Unertl where the scope is allowed to move forward in the rings under the recoil of the rifle and which typically carry the windage and elevation adjustments in the mount.
Abbreviation for Concealed Firearms License.
The rear sight is placed at the end of the barrel nearest the shooter. It may be in the shape of a square notch, a U, a V, a ring, or simply two dots designed to be visually placed on either side of the front sight while shooting.
A description of a bullet whose forward diameter has expanded after penetration.
A small single-shot or multi-barreled pocket pistol. Derringers (spelled with two Rs) are called that because of the original desinger and anmufactuturer of that type of gun, Henry Deringer. To get around copyright infringment other designers and manufacturers spell the name with two Rs.
A railgun is an electrically powered electromagnetic projectile launcher based on similar principles to the homopolar motor.
A bullet design featuring a conical extended nose, with a flat point, and a sharp edged shoulder that serves to cut a full diameter hole in the target. This design also may be found with a hollow point to facilitate expansion. A modified wadcutter bullet design with slightly sloping edges, designed to load smoothly in a semi-automatic pistol.
Any safety, internal or external, which functions apart from the shooter's conscious control. Grip safeties are one example of a passive external safety.
A needle like metal part of a modern firearm that gives a vigorous strike to the primer initiating the firing of the cartridge.
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 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.
Abbreviation for the Bureau of Alcohol, Tobacco, Firearms and Explosives
Nickname for the U.S. M1841 Rifle, a .54 caliber muzzleloading rifle. The name comes from their use by a group of U.S. Volunteers from Mississippi who were commanded by Jefferson Davis in the Mexican War. Some were later rebored to .58 caliber.
Head [of a Stock]. The forward end of a buttstock, where it meets the receiver and accepts the bulk of the gun's recoil when fired.
The entire process of making the trigger complete its journey past the trigger break.
The distance the trigger must travel before it reaches the break point and fires the gun.
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