Letter: T

A bolt action firearm on which it is necessary to rotate the bolt handle upwards for unlocking before it can be pulled to the rear. Similarly, it is necessary to rotate the bolt handle downward after closing to lock the firearm and enable the gun to be fired.

A double trigger arrangement used on some double-barrel firearms, wherein one or both triggers will, with each pull, fire the barrels sequentially. They are non-selective.

The distance required for one complete turn of rifling usually expressed as a ratio, e.g., 1 in 10 inches.

A stock consisting of two separate parts, the buttstock and forearm.

A part of the mechanism of some firearms which is released by the action of the trigger.

A telescope mount having two separate base band ring assemblies.

A propellant composed of colloided nitrocellulose, nitroglycerine and nitroguanidine. Generally used in large caliber military ammunition.

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

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.

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