Rolling block

Rolling block

A form of firearm action where the sealing of the breech is done with a circular shaped breechblock able to rotate on a pin. The breechblock is locked into place by the hammer, thus preventing the cartridge from moving backwards at the moment of firing. By cocking the hammer, the breechblock can be rotated freely to reload the weapon.

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Part of Speech: noun
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Industry/Domain: Military
Category: Firearms
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Related terms

rolling block

Military; Firearms

A form of firearm action where the sealing of the breech is done with a circular shaped breechblock able to rotate on a pin. The breechblock is locked into place by the hammer, ...

Rolling

Materials science; Engineering; Education; Metallurgy; Mechanical engineering; Knowledge

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Internet; Internet communication

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Automotive; Automobile

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Computer; Software; Software engineering

(1) A group of contiguous storage locations, computer program statements, records, words, characters, or bits that are treated as a unit.~(2) To form a group as in (1).

block

Engineering; Electronic engineering

1. A group of data words or digits. 2. A group of memory storage spaces. 3. A circuit that operates as an identifiable unit. 4. The symbol for a circuit, stage, unit, or device ...

trigger guard

Military; Firearms

The loop shaped construction that encircles the trigger. Usually extending from the receiver and connecting again to the firearm at the grip. The purpose of the trigger guard is ...

chamber

Military; Firearms

The cylinder in which ammunition is fired from. The cylinder in most firearms is directly connected to the barrel and holds the cartridge in place as its primer is struck by a ...

take-down pin

Military; Firearms

In the field of rifles, take-down levers and tabs are rare and most rely on proprietry disasembly methods. One of the most popular methods for adding a quick disassembly function ...

trigger

Military; Firearms

A lever which connects the index (in most cases) with the trigger shear, usually shaped in a wide-radius convex curve in an otherwise flat piece of material. Older triggers have a ...

trigger housing

Military; Firearms

The area milled, pressed, moulded or otherwise created in the receiver to hold the trigger assembly.

take-down lever

Military; Firearms

When dealing with small arms that use a lever in the operation of field-stripping, the term 'take-down lever' is used. It describes the wing of metal attached to a pin which ...

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