Hammer (firearm)

Hammer (firearm)

The hammer of a firearm was given its name for both resemblance and functional similarity to the common tool. The function of the hammer is to strike the firing pin in a firearm, which in turn detonates the impact-sensitive cartridge primer.

When the trigger of a firearm is depressed, it acts on the sear, which in turn releases the spring-tensioned hammer. Some firearms have a striker instead of a hammer and firing pin.

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  • hammer — [ham′ər] n. [ME hamer < OE hamor, akin to Ger hammer, ON hamarr, crag, cliff < IE * k̑omor , stone hammer < base * ak m < ak̑ , sharp, sharp stone > Gr akmē, point, akmōn, anvil] 1. a tool for pounding, usually consisting of a… …   English World dictionary

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  • hammer — ham•mer [[t]ˈhæm ər[/t]] n. 1) bui a tool consisting of a solid head, usu. of metal, set crosswise on a handle, used for driving nails, beating metals, etc 2) bui any of various instruments or devices resembling this in form, action, or use, as a …   From formal English to slang

  • hammer — 1. noun /ˈhæm.ə(ɹ),ˈhæmɚ/ a) A tool with a heavy head and a handle used for pounding. b) A moving part of a firearm that strikes the firing pin to discharge a gun. 2. verb /ˈhæm.ə(ɹ),ˈhæmɚ/ a) To …   Wiktionary

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  • Sear (firearm) — In a firearm, the sear is the part of the trigger mechanism which holds the hammer or striker back until the correct amount of pressure has been applied to the trigger; at which point the hammer or striker is released to discharge the weapon. The …   Wikipedia

  • Safety (firearms) — This article is about the mechanical safety devices built into most firearms. For the main article about firearm safety education, see Gun safety. Close up shot of a safety of an M16A2 rifle. In firearms, a safety or safety catch is a mechanism… …   Wikipedia

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