Broken MIM parts

Discussion in 'General Handgun Discussion' started by danf_fl, Feb 14, 2011.

  1. danf_fl

    danf_fl Retired Supporter

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    I'm not trying to start any debate.

    I've heard of MIM parts breaking (so far I have not personally had any).

    Do you have pictures of broken MIM parts?

    Again, this is not asking opinions or debates. I just want see them.
     
  2. M14sRock

    M14sRock New Member

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    I sheared a claw off the extractor of my SS Colt Enhanced Commander many years ago. At the time I thought it was a cast part, but it was very light. thinking back on it I'm sure it was a MIM part. The disconnector in that pistol was MIM.

    My shooting partner shoots IDPA, IPSC, or Police matches almost every Saturday. He has reported back to me on a few days that "so and so blew ... part in the match today". Invariably they are guns full of factory MIM.

    But I have not witnessed them, though he is the least inflammatory I know.
     

  3. danf_fl

    danf_fl Retired Supporter

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    If you can get those parts, would you post pictures?
     
  4. M14sRock

    M14sRock New Member

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    I probably tossed the broken extractor, but it could be in one of my tool boxes.

    I'll see if he has, or can get, any of the broken MIM parts. Most of the squared away guys he shoots with will have nothing to do with MIM, so it is the beginners who are new to guns that walk off the line with a puzzled look on their face.
     
  5. Dillinger

    Dillinger New Member

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    Dan - There may have been some MIM parts come through the shop that were "broke" but I have never seen one. I'll double check and see if Brett has any from the cast off pile.

    Back when I asked about MIM parts and if I should be concerned, he pulled a manual safety from BUL out of Israel and he put it in the endmill and he took a few thousand off of it in a couple of passes.

    Once he was done he pulled out the big magnifier and showed me how the Injection Molding wasn't 100%. That there were very tiny "gaps", like the smallest of air bubbles, and just said solid metal was preferred in his "former line of work".

    For me, that was enough, but I admit I have yet to see a truly shattered or "broken" MIM part.

    Let me check into this for you.

    JD
     
  6. spittinfire

    spittinfire New Member Supporter

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    JD, I'm not disputting what you were shown or what your friend told you but properly made MIM should not have those "gaps". It's just like any other manufacturer of late, they are trying to cust costs and using a cheaper part is an easy way.

    I've got a new 1911 in the works that I plan to keep for a LONG time and I plan to replace the MIM parts one at time. I have never seen an MIM part fail but there are better options out there and for me to get years of service as well as a carry piece why cut corners.
     
  7. Dillinger

    Dillinger New Member

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    I would agree Spitty. Properly made.

    The part in question was from Israel and a company called BUL. They have a line of pistols, I am not sure if they are capable of being imported or not, that are all 1911 clones that are pretty darn cheap in comparison because they use almost all MIM parts made in their facility.

    I did get in touch with Brett last night and he doesn't have any broken parts that he has kept, they get binned as there was no need to keep them. But he said he would start a collection for me as they came in. May take a couple weeks, may take 6 months, but I will have some to show eventually.

    Personally I don't want any MIM parts in my weapons, but for what I pay for them, I expect them to be 100% steel of the highest caliber. ;)

    JD
     
  8. spittinfire

    spittinfire New Member Supporter

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    I would agree with you. If I paid what you pay for a 1911 I would excpect nothing but high quality components. I don't have $2k to drop into a pistol so when my new toy shows up I'll replace pieces and modify until I have what I want.
     
  9. danf_fl

    danf_fl Retired Supporter

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    Refresh.
    Still looking for broken MIM parts.
     
  10. JonM

    JonM Moderator

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  11. spittinfire

    spittinfire New Member Supporter

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    Hey Jon, how did that happen? That's an odd place for a break....not even a stress area.
     
  12. JonM

    JonM Moderator

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    it was about 200ish rounds in and the slide started sticking. wouldnt go into battery. wouldnt lock to the rear. i was shooting standard velocity remington bulk ammo when it happened so its definately not ammo related as that particular brand doesnt cycle in most of my 22lr firearms. i had to smack it to get it to close it flaked off and the piece was locking the slide. when i took it apart several pieces came out. just defective. ATI is finally replacing the gun. they are sending me a brand new one. i dont expect the new one to have any issues.

    they are nice guns you just gotta go through some wierd RMA stuff to send it back. they didnt give me any trouble over the chipped frame and honored their warranty. i cant wait to get it back as it is an excellent shooter.
     
    Last edited: Apr 20, 2011
  13. danf_fl

    danf_fl Retired Supporter

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    Thanks JonM. One would think that with the number of people registered on this forum, we would have more instances.
     
  14. JonM

    JonM Moderator

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    back in the early 90's you would have a lot more instances as MIM was kinda new to the gun scene and lots of companies like ruger kimber and a few others really cheeped out with really bad mim parts.

    mim nowadays is generally just as good with the same failure as machined steel parts. so you really dont have a lot more mim failure than steel or forged part failure.

    mim in most respects is not bad to have and quite strong when done right.
     
  15. spittinfire

    spittinfire New Member Supporter

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    That's just weird all around....There had to have been a fault or contaminant in the metal. From the pictures it doesn't look like it was cracked and working on a break, it looks like a clean break. The only thing I could see that would indicate otherwise is parallel to the bottom of the slide rail, looks like it could be some shearing, the material appears more glossy.

    Wonder if it could have been dropped at some point.

    Thanks for sharing.
     
  16. Jpyle

    Jpyle New Member

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    Ok so now I'm curious. Just ditched an order Kimber for a S&W 1911...how does one go about identifying all the MIM parts? Are there some that need to be replaced and some that are a preference? How much skill is involved, especially for rookies that have yet to even field strip a 1911?
     
  17. M14sRock

    M14sRock New Member

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    A couple of months ago I asked my shooting partner to try to collect all the broken parts he sees at the IDPA and IPSC matches. He shoots every week. He says that rarely a week goes by without at least one guy breaking something. Usually it is on 1911s, and I suspect home fit MIM parts. On his SAI it has been the thumb safety, but I suspect his frame is out of spec as it took a major amount of work to fit an S&A magwell.

    I don't know if he has been successful in getting guys to give him their broken parts.
     
  18. JonM

    JonM Moderator

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    np, i thihk it was just a simple defect of some sort. its entirely possible it was dropped somewhere between germany and when it showed up here. i know i didnt drop it. the picture is a little deceptive its not a clean break at all its all jagged and rough like a bad metal pour or like you suggest contanimated.

    colts have the fewest mim parts for the 1000$~ price range. none of them are in areas that will prevent the gun from functioning in a need to shoot NOW!! situation. key places are hammer hammer strut mainspring housing, pins, sear and disconnector, and firing pin block.

    firing pin blocks unless they shatter to dust will continue to function have had several steel machined ones break and its not usually till an inspection its discovered. unless the safety pin itself breaks the actual safety portion on the outside can break and the gun will still function.

    if its a CCW gun and you are really worried about it just replace the sear, disconectore main spring housing hammer and strut. a gunsmith can do it for not a lot.
     
  19. rjgnwdc

    rjgnwdc New Member Supporter

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    I have had 2 MIM parts break it is the firing pin on a SW model 629 the picture s I have are of the firing pin protruding out of the bushing they are not that good of pictures but you can see it... you can't see how it is broken in pieces but that's what happen twice.

    [​IMG], [​IMG]