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2. Screw extractor - Wikipedia

   en.wikipedia.org/wiki/Screw_extractor

   A screw extractor held in a tap wrench. A screw extractor is a tool for removing broken or seized screws.There are two types: one has a spiral flute structure, commonly called an easy out after the trademarked name EZ-Out; [clarification needed] the other has a straight flute structure.

3. Push feed and controlled feed - Wikipedia

   en.wikipedia.org/wiki/Push_feed_and_controlled_feed

   Push feed mechanisms in theory give the opportunity to design a safer firearm when it comes to a case rupture (for example due to overpressure or excessive headspace) since the bolt head can be designed with a smaller extractor claw which in turn gives the rest of the bolt head a bigger surface area and therefore better support for the ...

4. 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.

5. Firearm malfunction - Wikipedia

   en.wikipedia.org/wiki/Firearm_malfunction

   A slamfire is a premature, unintended discharge of a firearm that occurs as a round is being loaded into the chamber, when the bolt "slams" forward (hence the name), as a result of the firing pin having not been retracted into the bolt, or from the firing pin being carried forward by the momentum of returning to battery. Similar to a hammer ...

6. Break action - Wikipedia

   en.wikipedia.org/wiki/Break_action

   Close-up of an IOF 32 break-action revolver. The first break-action revolver was patented in France and Britain at the end of December in 1858 by Devisme. [1] A substantial hinge pin joins the two parts of the rifle or shotgun; the stock with its firing mechanism and the fore-piece and barrel, which hold the round to be fired.

7. Glossary of firearms terms - Wikipedia

   en.wikipedia.org/wiki/Glossary_of_firearms_terms

   Open bolt: Open-bolt weapons have the bolt to the rear of the receiver when ready to fire. This means that when the trigger is pulled the bolt moves forward, feeds a cartridge into the chamber and fires that cartridge in one movement. Open sight: A type of iron sight that has an open notch. Open Tip Match: A type of bullet. The open tip design ...