Letter: S

A number applied to a firearm by the manufacturer in order to identify the individual firearm.

A trigger having longitudinal grooves on its face.

Narrow parallel grooves cut into a surface to provide a gripping surface or to break up light reflections.

Commercially loaded, sporting ammunition, intended to meet the full service requirements of the targeted consumer.

1. Commercially available sporting ammunition. (As opposed to proof, reference, etc., or other special use ammunition). 2. Ammunition carried by Police Officers on duty. Also, ammunition carried by soldiers in combat, as opposed to special service ammunition, i.e. Match, Armor-piercing, etc.

Either a single or double trigger arrangement on which the required trigger pull force can be made very light by means of “setting” mechanism. May be either Double Set trigger or Single Set trigger.

The arming of a set-trigger mechanism of a firearm so equipped. See Set Trigger.

A trigger which has a minimum projection from the action and is not usually surrounded by a trigger guard. Also called Spur Trigger.

Generic term for the unloaded case for metallic or shotshell ammunition. A colloquial term incorrectly used for loaded ammunition.

A device for catching fired shells.