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Thread: New CM40 Owner FTF Issues - Advice?

  1. #11
    Join Date
    Apr 2013
    Location
    NE Ohio
    Posts
    5,564

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    thanks for the update.
    ​O|||||||O

  2. #12
    Join Date
    Mar 2014
    Posts
    10

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    victorlautreamont


    Does the gun work?

  3. #13

    Default

    Update: FINALLY got down to the range with the CM40. Put ~100 rounds through it and had only one jam. (And it was a more conventional 'jam', where the bullet got fed into the chamber at the wrong angle, not what I was seeing before with the slide misbehaving.)

    It's still very frustrating to get a gun that was so obviously wrong straight from the factory, especially when it sounds like I wasn't the first person to have this issue. But Kahr handled it pretty well IMO. Sent me an RMA same-day, paid for overnight shipping both ways, had it back to me within the three-week period specified on their service guidelines, replaced the barrel and guide rod along with the spring (I'd imagine it WAS the spring, but of course who knows).

    I'm going to consider this case closed...

  4. #14
    Join Date
    Jan 2015
    Location
    Charlotte area
    Posts
    159

    Default

    Just for fun you might break the gun down and polish the feed ramp and barrel mouth. I used Colgate but Crest will do. I brushed it for about 25 minutes, cleaning off the toothpaste and starting again midway through. I had experienced a feed failure every third round on my PM45 on my first outing. On the second outing it ran perfectly. So polishing is fun and profitable.

  5. #15
    Join Date
    Dec 2017
    Posts
    19

    Default

    What is the stock length of the recoil spring supposed to be?

  6. #16
    Join Date
    Sep 2009
    Location
    Wet & Wild Pacific NW
    Posts
    27,116

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    Other than a ball park figure that's probably an impossible measurement to arrive at. Probably varies a bit.

    Also the measurement will be much less after the spring has been in the gun even just over night.

    It's built to take a predetermined set. That length will also vary a bit I'm sure.
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