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The incredible side-by-side AK....

Discussion in 'Rifle Country' started by SDC, Oct 7, 2008.

  1. SDC

    SDC Well-Known Member

    I'm reading through S.B. Monetchikov's "History of Russian Assault Rifles", and he mentions this downright freaky rifle designed by V.S. Yakushchev at TsNIITOChMASh during the 1970s; a side-by side AK variant, with one side firing the standard 5.45x39mm round, and the other side firing a special short .50-calibre grenade cartridge. This rifle will fire one OR the other, and to switch back and forth, you need to remove one of the magazines, as the magazine well for one calibre is the ejection port for the other calibre. The 5.45mm side accepts a 30-round magazine, while the 12.7mm side accepts a 10-round magazine. Here are a couple of pictures of this oddball, from http://militaryclub.narod.ru/war/pers.htm

    Overall, assembled:

    Overall, stripped:

    View of muzzle of 12.7mm barrel:

    View of bolt, showing extractors and ejection slots:
  2. texfed

    texfed Well-Known Member

    Cool! T;)hat's right up there with the Nazi Germany sub gun that had a curved barrel to shoot around corners!
  3. psyopspec

    psyopspec Well-Known Member

    Cool find, thanks for sharing!
  4. mgregg85

    mgregg85 Well-Known Member

    Cool idea but I'm wondering how heavy it would be.

    I'm thinking the underslung grenade launcher on an AK would be more effective as it could be kept loaded all the time with the AK still loaded and ready.

    Having to unload one caliber to use the other on the double weapon seems like it would be too time consuming on a battle field.
  5. SDC

    SDC Well-Known Member

    Monetchikov says 4.9 kilograms unloaded, which works out to a bit over 10 pounds, 12 ounces.
  6. modifiedbrowning

    modifiedbrowning Well-Known Member

  7. JesseL

    JesseL Well-Known Member

    I'm really not understanding what I'm seeing on the bolt/bolt carrier.

    It looks like both bolts are connected? But how would they rotate to lock?
  8. SDC

    SDC Well-Known Member

    Given the "elongated oval" shape of the bolt face(s), I think the whole front of the bolt cams up and down to lock, instead of rotating.
  9. daskro

    daskro Well-Known Member

    Perhaps the two rails below the bolts rotate away from the ejection port as the action is disengaged.
  10. JesseL

    JesseL Well-Known Member

    It looks like you're correct, but that raises more questions:

    Are both barrels fired simultaneously? If so, why two gas pistons?

    How does ejection work when the extractors and ejectors are opposite from where they ought to be for flinging empties out of their respective sides?
  11. nalioth

    nalioth Well-Known Member

    Reading is fundamental.
  12. JesseL

    JesseL Well-Known Member

    Whoops, missed that part.:eek:
  13. nalioth

    nalioth Well-Known Member

    I suspect this weapon would not have been issued for general use.
  14. Famaldehide Face

    Famaldehide Face Well-Known Member

    Gotta give those Russian Engineers some credit:cool:
  15. LaEscopeta

    LaEscopeta Well-Known Member

    So the 12.7mm mag fits onto the 5.45 mm ejection port on the right side of the rifle? The 1st photo of the right side does not look like the standard AK ejection port but there is a level below the rear sight that looks like it might hold the 12.7 mm mag in place.

    If the 12.7 mag goes on the right side maybe that explains why 2 gas pistons are needed. The big mag would stop the bolt handle for the small caliber piston from moving, requiring a second piston (and a reciprocating handle for the 2cd piston on the left of the rifle?)
  16. JesseL

    JesseL Well-Known Member

    When a 5.45mm magazine is in the right side magwell it fires 5.45mm rounds, the right side piston cycles the action, and ejects the empties out the magwell on the left.

    When a 12.7mm magazine is in the magwell on the left, it fires 12.7mm rounds, the left side piston cycles the action, and the empties eject out the right side magwell.

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