A screw used for attaching the stock to the receiver or frame of a firearm. More than one may be used per firearm.
The twisting and bending of a wood stock due to moisture absorption.
Extra long screws used by stockmakers during the inletting operation to maintain alignment of the trigger guard and other auxiliary items with the action. Also known as Inletting Screws or Guide Screws.
The fixed vertical face of a frame, typical of a break-open firearm, which contains the striker(s) or firing pin(s).
This term is used when a firearm stops firing due to a malfunction of either the gun mechanism or ammunition. This term is normally used in connection with automatic firearms, machine guns, etc.
A type of closure of the mouth of a metallic case or shotshell in which the sidewalls are folded in a star-shaped pattern.
A failure to eject where the fired case is caught in the ejection port by the forward motion of the bolt The case protruding upward out of the ejection port is said to resemble an old fashioned stove pipe.
A measuring instrument for determining internal diameters, often used to measure the inside diameter of a gun barrel.
On shoulder firearms, describes a butt stock without a pistol grip.
A projection at the end of a mainspring which fits into the lock plate of a side lock action gun.