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Military > Firearms

out-of-battery

Military; Firearms

The status of a weapon before the action has returned to the normal firing position. The term originates from artillery, referring to a gun that fires before it has been pulled ...

over-bore

Military; Firearms

Small caliber bullets being used in very large cases. It is the relationship between the volume of powder that can fit in a case and the diameter of the inside of the barrel or ...

obturate

Military; Firearms

Obturation is the process of a bullet expanding under pressure to fit the bore of the firearm, or a cartridge case expanding under pressure to seal the chamber. See also swage.

parkerizing

Military; Firearms

A method of protecting a steel surface from corrosion and increasing its resistance to wear through the application of an electrochemical phosphate conversion coating. Also called ...

percussion cap

Military; Firearms

A small cylinder of copper or brass that was the crucial invention that enabled muzzle-loading firearms to fire reliably in any weather. The cap has one closed end. Inside the ...

Picatinny rail

Military; Firearms

A bracket used on some firearms in order to provide a standardized mounting platform, similar to the weaver rail mount. The rail comprises a series of ridges with a T-shaped ...

tactical rail

Military; Firearms

A bracket used on some firearms in order to provide a standardized mounting platform, similar to the weaver rail mount. The rail comprises a series of ridges with a T-shaped ...