Letter: T

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.

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

1. A metal plate fitted to the lower part of some frames through which the trigger or triggers pass. 2. A component attached to the frame or receiver of some firearms, which supports the major components of the firing mechanism and may have the trigger guard as an integral portion.

The average force which must be applied to the trigger of a firearm to cause the sear, striker, or hammer to release with the force applied approximately parallel to the bore line.

A device for measuring trigger release force.

An accessory which is attached to the trigger to give a much larger trigger-finger bearing surface.

1. A device to prevent certain firearms from being fired until the finger lever is closed. 2. A device to prevent over-travel of the trigger.

That portion of a revolver frame which passes over the cylinder.

The closure disc over the top of the shot column held in place by a rolled crimp.

A projection which extends behind the breech end of the barrels on some breakopen firearms. When the gun is closed, it fits into a corresponding recess slot in the frame and is used for locking purposes.