Archives: Glossary

An arrangement of two triggers in which the actuation of one trigger presets the second resulting in a light trigger pull of the latter.

A term used for firearms having two barrels and a separate trigger for the discharge of each. This term does not apply to firearms with double set triggers.

Two barrels in a firearm mounted to one frame. Can be vertically (“over-under”)or horizontally (“side-by-side”) aligned.

A two-barrel firearm, usually side by side. Also known as Double Barrel or Double.

Simultaneous discharge of both barrels of a double-gun with a single pull of the trigger.

A pattern whose central area has few or no pellet hits.

See “What does “dram equivalent” mean on shotgun ammunition (saami.org/faqs/#dram-equivalent-ammunition)

1. Ammunition – a longitudinal scratch on a cartridge case caused by foreign material on either the draw punch or die during fabrication. 2. Arms: See Witness Mark.

A three-barreled long gun in which a combination of smoothbore and rifled barrels is used.

A passive safety mechanism that prevents unintentional firing when the firearm is dropped.