ATF

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Bureau of Alcohol, Tobacco, Firearms and Explosives
Firearms

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Terminology & Nomenclature

Bolt Action

Note: The Bolt action is utilized in the design and function of rifles, shotguns and pistols including single shot and magazine-fed repeating models. This illustration exhibits the primary characteristics of a rifle, but most component parts are applicable in a revised configuration.

A diagram showing various parts of a bolt action weapon and their defined names: the crossbolt safety, stock, receiver ring, etc.

Group Callout Schedule [a]

Group

Description

Group (1)

Four magazine configurations available on the repeating models of this type action.
A-Tubular, B-Fixed Internal, C-Bottom Access Floorplate, D-Detachable

Group (2)

Four various safety configurations which may appear on the available models.
A-Crossbolt, B-Top Tang, C-Side Lever, D-Tailpiece Safety

Group (3)

Two buttstock appointments available in this group.
A-Butt Plate, B-Recoil Pad

Group (4)

Two barrel configurations which may appear on this type action.
A-Rifled, B-Smooth Bore

  1. Group callouts identify various configurations of a specific component which may be incorporated in the function of the various models employing the bolt action in their design. However, only one type component from each callout group will appear on any given subject firearm.