Letter: T

1. The end-over-end rotation of an unstable projectile in flight. 2. A cleaning and polishing process, sometimes used in firearm part and ammunition manufacturing.

A telescope mount arrangement which has a hollowed-out base through which the iron sights may be seen and used.

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 metal tube that contains cartridges or shells end to end.

A connecting piece between the trigger and the sear.

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

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.