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  2. Trapdoor mechanism - Wikipedia

    en.wikipedia.org/wiki/Trapdoor_mechanism

    The hinged breechblock caused these rifles to be named "Trapdoor Springfields". [3] The conversion from musket to breechloader was done by milling open the barrel's breech section and inserting a hinged trapdoor fastened to the top of the barrel. A thumb-operated cam latch at the rear of the breechblock held it shut when in closed position.

  3. Breechloader - Wikipedia

    en.wikipedia.org/wiki/Breechloader

    A series of interlocking doors closes and opens the path from the gunhouse to prevent a flash from traveling down the path to the magazine. A breechloader [ 1 ] [ 2 ] is a firearm in which the user loads the ammunition from the breech end of the barrel (i.e., from the rearward, open end of the gun's barrel), as opposed to a muzzleloader , in ...

  4. Breechblock - Wikipedia

    en.wikipedia.org/wiki/Breechblock

    A typical break-action, double-barreled shotgun. A way of closing the breech or chamber is an essential part of any breech-loading weapon or firearm.Perhaps the simplest way of achieving this is a break-action, in which the barrel, forestock and breech pivot on a hinge that joins the front assembly to the rear of the firearm, incorporating the rear of the breech, the butt and usually, the ...

  5. Bolt (firearms) - Wikipedia

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

    A bolt is the part of a repeating, breechloading firearm that blocks the rear opening (breech) of the barrel chamber while the propellant burns, and moves back and forward to facilitate loading/unloading of cartridges from the magazine. The firing pin and extractor are often integral parts of the bolt.

  6. Chamber (firearms) - Wikipedia

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

    Chambers of a revolver's cylinder. The act of chambering a cartridge means the insertion of a round into the chamber, either manually or through the action of the weapon, e.g., pump-action, lever-action, bolt action, or autoloading operation generally in anticipation of firing the weapon, without need to "load" the weapon upon decision to use it (reducing the number of actions needed to ...

  7. Falling-block action - Wikipedia

    en.wikipedia.org/wiki/Falling-block_action

    Falling-block action military rifles were common in the 19th century. They were replaced for military use by the faster bolt-action rifles, which were typically reloaded from a magazine holding several cartridges. [2] A falling-block breech-loading rifle was patented in Belgium by J. F. Jobard in 1835 using a unique self-contained cartridge. [3]

  8. Automatic shotgun - Wikipedia

    en.wikipedia.org/wiki/Automatic_shotgun

    They generally store ammunition in detachable box or drum magazines in order to decrease reloading time, whereas most pump-action and semi-automatic shotguns use under-barrel tubular magazines. Automatic shotgun ammunition choices are slightly limited because the fired shot must provide sufficient recoil energy to reliably cycle the action.

  9. Breechface - Wikipedia

    en.wikipedia.org/wiki/Breechface

    The breechface is the front part of the breechblock that makes contact with the cartridge in a firearm. The breech block (or breechblock) in a gun is what holds a round in the chamber, and absorbs the recoil of the cartridge when the round is fired, preventing the cartridge case from moving. [1]

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