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  2. Trigger (firearms) - Wikipedia

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

    This design requires a trigger pull to both cock and trip the hammer/striker for every single shot, unlike a DA/SA, which only requires a double-action trigger pull for the first shot (or a typical DA/SA revolver, which can fire single action any time the user wishes but uses double-action as a default).

  3. Ruger SR-Series - Wikipedia

    en.wikipedia.org/wiki/Ruger_SR-Series

    Gunblast rated its SR9 example with a trigger pull of 30 N (6.7 lb f), and Gunblast rated its SR9c example with a trigger pull of 23 N (5.2 lb f). Gunblast's SR40 example was rated with a trigger pull of 29.5 N (6.6 lb f). The difference in trigger-pull is most likely due to variances between individual guns, and not to a change in specs by ...

  4. Manual fire alarm activation - Wikipedia

    en.wikipedia.org/wiki/Manual_fire_alarm_activation

    Many modern fire alarm pull stations are single-action and only require the user to pull down a handle to sound the alarm. Other fire alarm pull stations are dual-action, and as such require the user to perform a second task before pulling down, such as lifting or pushing in a panel on the station or breaking a glass panel with an attached hammer.

  5. Sear (firearm) - Wikipedia

    en.wikipedia.org/wiki/Sear_(firearm)

    Sear shown in a revolver action. In a firearm, the sear is the part of the trigger mechanism that holds the hammer, striker, or bolt back until the correct amount of pressure has been applied to the trigger, at which point the hammer, striker, or bolt is released to discharge the weapon.

  6. Glossary of structural engineering - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_structural...

    Rather, bents are simply cross-sectional templates of structural members, i.e., rafters, joists, posts, pilings, etc., that repeat on parallel planes along the length of the structure. The term bent is not restricted to any particular material. Bents may be formed of wooden piles, timber framing, [17] steel framing, or even concrete. [18]

  7. Glossary of firearms terms - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_firearms_terms

    Length of pull: The distance between the trigger and the butt end of the shoulder stock of a rifle or shotgun. Lever-action rifle. Lever-action: A type of firearm action with a lever that encircles the trigger guard area, (often including the trigger guard itself) to load fresh cartridges into the chamber of the barrel when the lever is worked.

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    mail.aol.com

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  9. SIG Sauer P250 - Wikipedia

    en.wikipedia.org/wiki/SIG_Sauer_P250

    The trigger is a self-decocking DAO trigger system with spurless and recessed hammer. The trigger system has a pull weight of about 45 N (4.6 kgf, 10.1 lbf) [4] The handguns are available with a dark colored Nitron slide surface finish, two tone finish, where the stainless steel slide has an untreated surface, and a diamond-plated finish. [5]