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2. Extractor (firearms) - Wikipedia

   en.wikipedia.org/wiki/Extractor_(firearms)

   The extractor moves with the bolt to pull the cartridge case rearwards out of the chamber, and at some point, the ejector eccentrically exerts a frontal push (from the case's frame of reference), which torques and "flicks" the case out of a side opening on the receiver known as the ejector port. Another example of extractor exists in the form ...

3. Vacuum ejector - Wikipedia

   en.wikipedia.org/wiki/Vacuum_Ejector

   A vacuum ejector, or simply ejector is a type of vacuum pump, which produces vacuum by means of the Venturi effect.. In an ejector, a working fluid (liquid or gaseous) flows through a jet nozzle into a tube that first narrows and then expands in cross-sectional area.

4. Break action - Wikipedia

   en.wikipedia.org/wiki/Break_action

   Since the cartridge extractor or ejector is built into the barrel assembly in break action weapons, the breech face is simply a flat plate with a hole for the firing pin to protrude through. This makes break actions ideal for interchangeable barrel firearms, such as the popular Thompson/Center Arms Contender and Encore pistols. The simplicity ...

5. Glossary of firearms terms - Wikipedia

   en.wikipedia.org/wiki/Glossary_of_firearms_terms

   Pump-action: A rifle or shotgun in which the handgrip can be pumped back and forth to eject a spent round of ammunition and to chamber a fresh one. It is much faster than a bolt-action and somewhat faster than a lever-action , as it does not require that the shooter remove their trigger hand during reloading.

6. Double-barreled shotgun - Wikipedia

   en.wikipedia.org/wiki/Double-barreled_shotgun

   Similarly, doubles are more easily examined to see if loaded than pump-action or semi-automatic shotguns, whose bolt must be opened and chamber closely examined or felt to make sure it is unloaded; with a double gun (or a break-action single gun), whether the gun is loaded, i.e., has cartridges in any chamber, is easily and immediately seen ...

7. Push feed and controlled feed - Wikipedia

   en.wikipedia.org/wiki/Push_feed_and_controlled_feed

   Most push feed mechanisms use a spring loaded plunger type of ejector situated at the breech face, and this system ejects the spent casing as soon as the case mouth clears the ejection port. [9] Most controlled feed mechanisms use a fixed mechanical ejector attached to the receiver, which results in the bolt having to be pulled all or almost ...