A captive bolt pistol (also variously known as a cattle gun, stunbolt gun, bolt gun, or stunner) is a device used for stunning animals prior to slaughter.
The principle behind captive bolt stunning is a forceful strike on the forehead using a bolt to induce unconsciousness. The bolt may or may not destroy part of the brain.
The bolt itself is a heavy rod made of non-rusting alloys, such as stainless steel. It is held in position inside the barrel of the stunner by means of rubber washers. The bolt is usually not visible in a stunner in good condition. The bolt is actuated by a trigger pull and is propelled forward by compressed air or by the discharge of a blank round ignited by a firing pin. After striking a shallow but forceful blow on the forehead of the animal, spring tension causes the bolt to recoil back into the barrel. The use of penetrating captive bolts has been discontinued in the commercial arena.
The captive bolt pistol was invented in 1903 by Dr. Hugo Heiss, former director of a slaughterhouse in Straubing, Germany.
Read more about Captive Bolt Pistol: Variations, Use, Use As Murder Weapon, Popular Culture
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