TRAP DOOR ACTION

An action in which a top-hinged breech block pivots up and forward to open. Locking on this action is accomplished by a cam piece located at the rear of the breech block that fits into a mating recess. Also known as a “Cam Lock.”

TRAP GUN

A shotgun specifically designed for the game of Trap shooting.

TRAP SHOOTING

A shotgun target sport in which clay targets are thrown away from the shooters by a reciprocating trap located forward of the firing line.

TRAP-DOOR BUTTPLATE

A type of buttplate with a hinged closure plate in the butt-end of a firearm. Opening of the trap door exposes a recess in the stock which can be used for storage.

TRIGGER

That part of a firearm mechanism which is moved manually to cause the firearm to
discharge.

TRIGGER BAR

A connecting piece between the trigger and the sear.

TRIGGER CREEP

The sensible movement of the trigger or take-up or pretravel, prior to sear release.

TRIGGER GUARD

A rigid loop which partially surrounds the trigger to reduce the possibility of accidental discharge.

TRIGGER LOCK

1. An accessory for blocking unauthorized trigger movement during gun storage. Must never be applied to a loaded firearm. 2. A form of firearm safety blocking trigger movement.

TRIGGER MECHANISM

Those parts which, when pressure is applied to the trigger, release the hammer or striker. Also called Fire Control.