HOODED SIGHT

A front sight that is provided with a cover to shade it from direct light.

HOOK OF LUMP

A notch machined into a lump used to mate with the hinge pin.

HORIZONTAL DISPERSION

The greatest horizontal distance between any two bullet holes on a target, normally measured center-to-center.

HULL

A slang term for a cartridge or shotshell case.

HINGE PIN

A cylindrical member at the forward end of a frame about which the barrel or barrels pivot. Also called a Joint Pin.

HINGED FRAME ACTION

An action in which the barrel(s), one or more being either smooth or rifled, is pivoted on the frame. When the action is open, the barrel may pivot up or down or sideways for loading or unloading. When the action is closed, the breech of the barrels swings against the standing breech. Opening is normally accomplished by movement of a top, side, or under lever. A top break action is an example of a hinged frame action.

HAND TRAP

A small, hand-operated target throwing device.

HANDGUN

A firearm designed to be held and fired with one hand.