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Broken AK

Discussion in 'The Kalashnikov Klub' started by machman, Jan 31, 2010.


  1. machman

    machman
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    Yep, I was at the range today and my MAK90 bolt broke on me. I have had this gun for 11 trouble free years. It has been 100%. Where is a good place to get another bolt? Just for fun, I tried the bolt out of my hungarian and it wont work. I guess that the Norincos are a little different in many ways.

    Here is a photo of the part and a photo of the gun.

    [​IMG]
    [​IMG]
     

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  2. space_weazel

    space_weazel
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    Holy crap. I need to go get me some extra bolts.
     

  3. Another Miller

    Another Miller
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    prankster

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    First off, you have a nice rifle.Never seen a mak look as good.About that breakage, You might want to get ahold of a smith and see why it happened.


    Second, you might try a place called sarco.Ive done alot of business with them.They advertise in shotgun news,usually carry a large variety of surplus and modern parts.Im sure if they dont have it, they can direct you to someone who does.
     
  4. GIockGuy24

    GIockGuy24
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    The quality control of the steel parts in MAK90's and MAK91's seems to be a bit lower than older Chinese AK's. The reason the European bolt won't work is the camming angle on the bottom of the left bolt lug which is fitted / matched to the bullet guide. This is actually considered fittable if the angle is in the bolt lug is modified to match the bullet guide. It would be best to stay with a Chinese bolt though. There are a few versions of Chinese bolts, especially in MAK90's / MAK91's. The normal 7.62 Chinese bolt has a full length body and firing pin that is a floating giring pin. There is also a spring loaded firing pin nore common to Poly Tech's but also found in Norinco's and will interchange. The spring loaded firing pin bolts are also full length. In the last MAK90's / MAK91's the bolt was shortened to lighten the floating firing pin and a step was machined in the hammer face to mate to the shortened bolt. These late production versions have some of the worst heat treatment and bolts can break from being brittle or bolts and hammers can show high wear from being too soft. You'll need to have the headspace checked when replacing the bolt also. It is possible to mate a European bolt if the left bolt lug angle is changed to match the Chinese bullet guide. Some European bolts may already have the same angle. In some countries this angle was fitted to each rifle and in other countries this angle was kept as close to the same as possible for universal fit at the factory.

    Check this link for a Chinese replacement bolt.

    http://stores.polytechparts.com/StoreFront.bok

    http://stores.polytechparts.com/-strse-AK-dsh-47-cln-Receiver-dsh-Parts/searchpath/54968593/start/11/total/25/Categories.bok

    Bare bolt body

    http://stores.polytechparts.com/-strse-432/Gas-Piston%2C-AKS/Detail.bok

    Complete bolt assembly

    http://stores.polytechparts.com/-strse-537/70-dsh-03-dsh-4C/Detail.bok

    I recommend buying a complete bolt assembly so the parts will all fit. The price seems too expensive though. Maybe try to find a used one first.

    The European bolt lugs can be different in size all the way around and may headspace completely differently.
     
  5. RWBlue

    RWBlue
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    Mr. CISSP, CISA
    CLM

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  6. lfd1

    lfd1
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    Try Brownells. They advertise on this site.
     
  7. my762buzz

    my762buzz
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    Who is the importer?
    Does the bolt serial number match the receiver?

    If its a CJA import that would be interesting.
     
  8. USAglock

    USAglock
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  9. machman

    machman
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    Thanks for the responses and complements guys. All numbers on this gun match. I will check the importer stamp this evening.
     
  10. Glockdude1

    Glockdude1
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    That is the first AK bolt I have seen that broke. About how many rounds have you put thru your rifle?

    In my experience I have seen many AR & M16 bolts broken, but never a AK bolt.

    :cool:
     
  11. machman

    machman
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    I have put maybe 2000 rounds through it.
     
  12. skanless

    skanless
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    IPA ISLAND

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    :wow: Never seen that befor.
     
  13. machman

    machman
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    The best I can tell, the import label looks like this:

    LABAND INC
    RNKNKMA.NY
    MADE IN CHINA
     
  14. my762buzz

    my762buzz
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    I have had a few gun smiths tell me they have seen this a few times.

    I thought they were BSing me at the time.

    Ben murray that makes the famous sks spring loaded firing pins has said he tested some chinese firing pins and found them way to soft.

    The case colored norinco mak 90 trigger parts sort of makes it seem like they surface hardened mild steel. They still seem to work fine. The firingline oklahoma based AK milled receiver maker says he has a test gun made of his heat treated milled receiver with the rest of the parts being chinese and he as over 100,000 rounds through it without a part broken yet. Cochise a board member of glocktalk says his mak 90 parts-maadi receiver century hybrid has over 40,000 rounds without a parts breakage or cleaning/lubing. I think chinese arsenal quality control has varied over time and this shows up once in a while. Anyone notice the mak 90 bolts look like they are made of a stainless steel alloy rather than a conventional carbon steel variety?




    MAK 90 bolt Its not mine.

    [​IMG]

    [​IMG]
     
  15. andyffer

    andyffer
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    Lancaster's lifetime warranty FTMFW
     
  16. machman

    machman
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    What does this mean? Is this a joke or what?
     
  17. machman

    machman
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    That one broke right where mine did. Can you put me in contact with the smith that you are talking about. I would like to know my best option for replacing this bolt.
     
  18. Ronaldo

    Ronaldo
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    Interesting...

    Sarco or Numrich Arms is an additional place to find replacement parts, though the bolt may require a bit of fitting.

    Actually, this is the first time I have ever seen a major part break (other than springs) on an AK... I suspect a flaw in the heat-treating or an undetected crack when the part was manufactured.

    Carlos, your opinion????

    Ronaldo
     
  19. machman

    machman
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    No luck with this part from Brownells, Numrich or Sarco.

    Polytech has it but recomends buying the hole bolt($140)

    I have thought about buying a whole bolt carrier with bolt from a parts kit....Like a Hungarian kit. What kind of problems will I run into if I try this?
     
  20. deadday

    deadday
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    A broken AK?? That's unpossible..
     
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