Glossary of Firearms Terms - T

T

• Taylor KO Factor: mathematical approach for evaluating the stopping power of hunting cartridges.

• telescoping stock or collapsing stock: A stock on a firearm that telescopes or folds in on itself in order to become more compact. Telescoping stocks are useful for storing a rifle or weapon in a space that it would not normally fit in.

• terminal ballistics: A sub-field of ballistics, is the study of the behavior of a projectile when it hits its target.

• trigger: A mechanism that actuates the firing sequence of a firearm. Triggers almost universally consist of levers or buttons actuated by the index finger.

• trunnion: a cylindrical protrusion used as a mounting and/or pivoting point. On firearms, the barrel is sometimes mounted in a trunnion, which in turn is mounted to the receiver.