RUPTURE

A generally circumferential separation in the side wall of a cartridge case. May be complete or partial.

SAAMI

The acronym for the Sporting Arms and Ammunition Manufacturers’ Institute.

SABOT

(Pronounced saˈbō or ˈsabō) A carrier for firing a sub-caliber projectile in a larger bore firearm. The sabot is intended to seal the bore and center the sub-caliber projectile in the bore. In most circumstances the sabot separates from the projectile after exiting the barrel.

SADDLE RING

A ring usually attached to the receiver of a firearm designed to be carried by a horseback rider.

SAFE

An incorrect generic term for Safety.

SAFE CARRYING CONDITION

The condition in which it is contemplated that a particular design of firearm is to be carried.

SAFETY (HANDLING)

Precautions taken by firearms users to help provide protection against accidental or unintentional discharge.

SAFETY (MECHANISM)

A device on a firearm intended to provide protection against unintended discharge under normal usage when properly engaged.
1. “On” – A term describing the position of a component of the safety device when set in a manner to provide protection against unintended discharge under normal usage.
2. “Off” – To allow the firearm to be discharged.

SCHNABEL

A German term for a hook shaped knob at the forearm tip of a stock.

SCHUETZEN BUTTPLATE

An extremely concave metal butt plate with a rearward extension usually at the bottom used mostly on target rifles for offhand (standing) shooting.