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Thread: Conversion to Short Stroke?

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    Conversion to Short Stroke?

    Anyone ever tried converting any AK platform (AK,RPK,PSL,VEPR,etc) to a short stroke system?
    In theory, it shouldn't be too hard,but probably time consuming.

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    Registered User Mackjack's Avatar
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    Any reason why? Or because America

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    Quote Originally Posted by Mackjack View Post
    Any reason why? Or because America
    Just curious.

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    Registered User DistalRadius's Avatar
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    Izhmash did it. They call it a Saiga-12.

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    Kinda inspired by the Dragunov or SKS.

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    Registered User Mackjack's Avatar
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    Isn't the svt series short stroke also? Svt40 etc

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    Registered User Mackjack's Avatar
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    And I'm not a genius, but don't saiga 12s have a long piston just like and ak...

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    Name:  PISTONM16.gif
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    Name:  300px-Gas_OPR.gif
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    Long stroke

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    Registered User Mackjack's Avatar
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    Sorry for posting like a maniac. But check this out. This guy did just what your thinking.... Idk why buy it intrigues me also.

    http://www.akfiles.com/forums/showthread.php?t=155801

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    Quote Originally Posted by Mackjack View Post
    Sorry for posting like a maniac. But check this out. This guy did just what your thinking.... Idk why buy it intrigues me also.

    http://www.akfiles.com/forums/showthread.php?t=155801
    Thanks.
    Lots of good info. Will save a lot of Tinker Time.

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    Registered User DistalRadius's Avatar
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    Quote Originally Posted by Mackjack View Post
    And I'm not a genius, but don't saiga 12s have a long piston just like and ak...
    They use a gas "puck" which in its very short travel imparts all of its energy into the carrier extension ("piston") which cycles the bolt. The fact that the gas does not act upon the piston for the full length of travel makes it a short stroke system.

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    Registered User Mackjack's Avatar
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    Oh so the saga 12 is like a short stroke that punches against the piston instead of directly on to the bolt carrier? I think I get what your saying. Good to know. Thanks!

  14. #14
    Registered User DistalRadius's Avatar
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    Yeah, the system looks externally identical to an AK but in a Saiga-12 the gas impinges directly on the "puck" (which is actually the piston in this case) which moves back like an inch and a half or so striking the "carrier extension" (notice it is not called a piston in a S12) imparting its energy to effect rearward movement.



    So it actually does function just like this diagram you posted except the reciprocating "cup" is replaced with the S12's "puck" and the "operating rod" is instead an extension of the S12's bolt carrier. And of course the whole thing nestles in a Kalashnikov-style gas tube.

    Here is a pic showing the surface of the gas puck inside the gas tube.

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    Registered User Mackjack's Avatar
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    Cool! Learn something new every day Lol. Thanks for the enlightenment!

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