A shoulder firearm having a stock which is fully adjustable for length of pull; drop at comb, Monte Carlo and heel; pitch and cast. It is used for fitting of custom made firearms to a specific shooter’s physical characteristics.


1. The cylindrical body of a shotshell. 2. Improper term for a shotgun barrel. 3. A barrel insert to allow firing of a smaller gauge shotshell.


An English term that is sometimes used to denote a shotgun hammer. Also refers to an interior part of gun locks which contain notches that interact with the sear.


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.