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Bolts (breechblocks)

Scope note

Sliding breechblocks incorporating a firing pin, cartridge case extractor, and one or more lugs to lock them into firing position, found in bolt action, automatic, and semiautomatic breechloading rifles, machine guns, and submachine guns with blowback action. They guide ammunition into the chamber and rotate to lock the breech mechanism.

Term type

AAT

Getty AAT term number

3000225006

Broader Terms used

breechblocks

Equivalent Terms used

bolt (breechblock)

Created

13yrs ago

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The Fitzwilliam Museum (2025) "Terminology definition for: bolts (breechblocks)" Web page available at: https://data.fitzmuseum.cam.ac.uk/id/terminology/term-54185 Accessed: 2025-02-28 01:17:38

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{{cite web|url=https://data.fitzmuseum.cam.ac.uk/id/terminology/term-54185|title=Terminology definition for: bolts (breechblocks)|author=The Fitzwilliam Museum|accessdate=2025-02-28 01:17:38|publisher=The University of Cambridge}}

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