Semiautomatic Rifle / Carbine Parts flashcards |

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  • Barrel

    provides a path for the fired bullet; its chamber holds the cartridge

    Bolt

    contains the firing pin, spring, and extractor (internal part)

    Bolt Lock Lever

    holds the bolt to the rear when the charging handle is pulled to the rear and the lower portion is depressed; releases the bolt when the upper portion is depressed

    Buffer / Buffer Spring

    enables the bolt to return after firing (internal part)

    Butt

    the end of the stock

    Chamber

    supports the cartridge at rest and during
    firing (internal part)

    Charging Handle

    enables manipulation of the bolt to chamber a round

    Ejection Port

    opening that permits the shell to exit the weapon (internal part)

    Ejector

    expels the shell from the ejection port
    (internal part of the bolt)

    Extractor

    grips and pulls the shell from the chamber

    Forestock / Hand Guard

    used to support the rifle with
    the support hand; acts as a heat shield from the barrel

    Forward Assist

    a button assuring that the bolt is locked

    Lower Receiver Group

    contains the magazine release,
    magazine well, trigger housing, and trigger components

    Magazine

    contains ammunition ready to be
    chambered

    Magazine Release

    permits removal of the magazine from the firearm

    Magazine Well

    housing for the magazine (internal part)

    Muzzle Flash Suppressor

    attachment on the barrel's forward end that reduces the flash as burning
    powder escapes when the bullet exits the barrel

    Safety

    blocks the hammer from striking the firing pin; prevents firing (located on the left side of the weapon)

    sights (front and rear)

    used to align the firearm to the bullet's point of impact

    Sling Swivels

    metal loops affixed to the rifle/carbine to which a carrying strap attaches

    Stock

    part that enables shoulder support during firing

    Take Down Pins

    enables separation of the upper receiver from the lower receiver and allows for
    fieldstripping and cleaning

    Trigger

    enables the firearm to fire when pulled

    Trigger Group

    section consisting of the trigger, trigger springs, safety, and all firing mechanism parts

    Trigger Guard

    part of the frame that protects the trigger

    Upper Receiver Group

    houses the bolt assembly group

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