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Thread: PKM bolt vs AKM bolt

  1. #1
    Gunco Regular mrtank's Avatar
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    Default PKM bolt vs AKM bolt

    I would appreciate it if someone that had one could post some pictures and dimensions comparing the PKM bolt verses the AKM bolt. Heck some of the PKM trunnion vs the AKM trunnion would also be appreciated. From all the pictures I have seen the PKM bolt looks a little wider. Thank you in advance and have a great day.

  2. #2
    Gunco Veteran Viper Dude's Avatar
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    Hello mrtank,
    I have held both the PKM and Dragonov bolts in my hand, side by side. They looked identical to me... but they would not interchange (I tried it). Sorry I don't have the engineering specs for those bolts.

    VD

  3. #3
    Gunco Member SW44's Avatar
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    Here you go! The photos show bolts from a PKM, Romak 3, and AKM (left to right). I took some measurements that I thought would be critical for bolt strength. measurements in inches

    PKM Romak3 AKM

    Model PKT Romanian AMD65

    Caliber 7.62x54 7.62x54 7.62x39

    Diameter across locking lugs 1.115 1.013 1.008

    Bolt Face Opening 0.581 0.579 0.454

    Lug Depth, left lug 0.669 0.537 0.417
    right lug 0.840 0.607 0.624

    Bolt length 3.387 4.240 3.333

    The PKM has bigger lug dimensions in the depth (front to back) and diameter. Just looking at them, the PKM bolt looks massive. I hope this helps.
    Attached Images Attached Images

  4. #4
    No Hope For Me 1biggun's Avatar
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    What Is a PKM??????? and were can these be bought??

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    Happy Camper hcpookie's Avatar
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    Quote Originally Posted by 1biggun View Post
    What Is a PKM??????? and were can these be bought??
    Modern Firearms - Kalashnikov PK / PKS / PKM / PKMS machine gun

  6. #6
    No Hope For Me 1biggun's Avatar
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    Belt feed now I remeamber. but still are these avalable any were?

  7. #7
    Gunco Regular mrtank's Avatar
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    Thank you for all the information SW44.

    Apex has some parts including the bolt head but no front trunnion...
    https://www.apexgunparts.com/product...74a3582311f409

    Wonder if dph arms would like to make a special trunnion..... pretty much have to widen everything....

  8. #8
    Gunco Member SW44's Avatar
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    The PKM parts sets, when available on Gun Broker, are very pricey. There have been some PKT variant parts sets in the reasonable price range. This is the tank version of the PKM. It has no sights, bipod, finger trigger, pistol grip or butt stock. A solenoid in the back fires the gun remotely.

  9. #9
    Always sore, always tired Bradrock's Avatar
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    you can spend some serious coin on these;

    Vltor - Projects - PKM BeltFed
    " Save a tree...........Eat A Beaver!"

  10. #10
    Always sore, always tired Bradrock's Avatar
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    Here's kits & some parts..
    Misc
    " Save a tree...........Eat A Beaver!"

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