In firearms, a safety or safety catch is a mechanism used to help prevent the accidental discharge of a firearm, helping to ensure safer handling.
Close-up shot of a safety of an M16A2 rifle
Heckler & Koch VP70 pistol with a push-button safety (cross bolt trigger block) at the back of the trigger guard
Dan Wesson 1911-style Patriot pistol with a grip safety lever protruding at the back of the grip
SIG Sauer P226 controls and parts: 1. Ejection port 2. Rear sight 3. Hammer, 4. Takedown lever 5. Decocker 6. Slide stop 7. Trigger 8. Magazine release
A trigger is a mechanism that actuates the function of a ranged weapon such as a firearm, airgun, crossbow, or speargun. The word may also be used to describe a switch that initiates the operation of
Safety (firearms)
…active" safety mechanism and are widely used; however, many "double-action" firearms such as revolvers do not have manual safeties as the longer, harder trigger pull to cock and fire double-action provides adequate trigger safety, while keeping the firearm in a more ready state. A grip safety is a lever or other…
Trigger mechanism in a bolt action rifle: (A) trigger, (B) sear, (C) striker spring, (D) striker.
Thompson submachine gun trigger
The double-crescent trigger on the MG 34, which enabled select fire capability without using a selector switch. Pressing the upper segment of the trigger produced semi-automatic fire, while holding the lower segment of the trigger produced fully automatic fire.