ITS HAPPENING: 10mm USP Barrels- Please reserve your slot!
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  1. #1
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    Default ITS HAPPENING: 10mm USP Barrels- Please reserve your slot!

    Just had a good talk with Mike and confirmed he will be running a batch of 10mm USP barrels in the next 6-8 weeks here. He needs a headcount of who is in for sure. He can make both styles of barrel (.40 profile and .45 profile), just put a note next to your name denoting which style you want. Price is going to be $300-$350 ea. depending on how many takers we have. No money is needed to reserve your place in line but please honor your word. See the list below of the current 10mm conversion routes.

    10mm Conversion Method 1 (Thanks lifesizepotato!):


    The proven route here is a full .40 gun converted to 10mm using custom STI mags (see here: https://www.hkpro.com/forum/hk-handgu...-usp-10mm.html). The downside of this conversion is:
    1) You can't eject an unfired 10mm round through the ejection port. You can drop the mag and let the round fall out or you can widen the ejection port which requires refinishing of the slide (unless its stainless).
    2) You can't use HK mags
    3) You need to dremel the STI mags
    4) You loose last round hold open.
    5) You loose the stock look because the STI mag do not mate flush with the gun.
    If you are doing this conversion you would want the .40 profile barrel.


    10mm Conversion Method 2 (Thanks scubadds!):



    Another newer method has surfaced that uses a .40 slide on a .45 frame (see here: https://www.hkpro.com/forum/hk-handgu...-underway.html). The advantage to this method is that you can use stock .45 mags with slightly bent feed lips and you retain last round hold open. The other big advantage is you still have a stock looking gun as far as mag fit goes. The downsides of this conversion are:
    1) You can't eject an unfired 10mm round through the ejection port. You can drop the mag and let the round fall out or you can widen the ejection port which requires refinishing of the slide (unless its stainless).
    2) The requirement for a post-KE .40 slide and a .45 frame (essentially buying two guns to make one).
    3) The .40 slide does not fully cover the end of the .45 frame. You end up with a slightly goofy looking recessed slide that can be easily solved by sanding/trimming the .45 frame. Given that the frame is the serialized portion and that some people will want to swap back to .45, this may not be desirable. ***This can also be resolved by using a .40 expert slide. See last picture above (Thanks TooSixty!)

    If you are doing this conversion you would want the .40 profile barrel.


    10mm Conversion Method 3 **Experimental:
    Given the revelations from conversion method #2, much interest has been generated in a 10mm barrel that would drop into a complete .45 gun. This would solve all of the downsides of methods #1 and #2 but it has never been done before, so it is very experimental. Possible issues here are extractor issues, firing pin alignment issues etc... I have not checked to see if a .40 extractor can be mounted in a .45 slide, so custom work may be required to get a functioning conversion. Mike mentioned he can manufacture extractors as well but that would be a separate endeavor. I would not recommend this route unless you are happy to be a guinea pig and potentially waste $350.
    If you are doing this conversion you would want the .45 profile barrel.
    Last edited by chune; 12-06-2017 at 02:07 AM.

  2. #2
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    1) chune - .45 expert profile
    2) drewcog - .45 profile
    3) egroeg - .40 profile
    4) egroeg - .40 expert profile
    5) shyster - .45 profile
    6) beezil - .45 profile
    7) johnwin84 - .40 expert profile
    8) waz0wski - .40 profile threaded 9/16x24
    9) mobster007 - .40 profile threaded 9/16x24
    10) aksahsalahs - .40 profile
    11) arctic427 - .40 expert profile threaded 9/16x24
    12) teamhelotes - .45 profile
    13) drjeds44 - .40 profile
    14) stormtrooper74 - .40 expert profile threaded 9/16x24
    15) bajajames - .45 profile
    16) DASchell - .45 expert profile
    17) Freak - .40 profile
    18) Turkina - .40 match profile
    19) HKhakday - .40 match profile threaded 9/16x24
    20) duey - .40 profile
    21) 3xtraH4ppyB34r - .40 profile threaded 9/16x24
    22) iphonemdk - .40 profile threaded 14.5x1 LH
    23) rampion - .40 profile threaded 14.5x1 LH
    24) colt_saa - .45 elite profile threaded 16x1 LH
    21) Prestige - .40 profile threaded 9/16x24

    Not added due to lack of specificity: signal10, blwngazkit
    Last edited by chune; 02-26-2019 at 02:03 PM.

  3. #3
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    1) .45 -> 10mm barrel for sure.
    2) .40 -> 10mm barrel only if #1 ends up not being produced.

    Thanks Mike.

    BTW, would this be better off in the handgun talk section? Mods?
    "Greater love has no one than this: to lay down one's life for one's friends." -John 15:13

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  5. #4
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    (1)-.40 profile barrel.

  6. #5
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    Quote Originally Posted by drewcog View Post
    1) .45 -> 10mm barrel for sure.
    2) .40 -> 10mm barrel only if #1 ends up not being produced.

    Thanks Mike.

    BTW, would this be better off in the handgun talk section? Mods?
    This for me too.

  7. #6
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    Ok, list has been updated. Surprised to see so many guinea pigs here!

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    .40 Profile

  9. #8
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    i am in for the .45 profile. caveat, the same as drewcog.

  10. #9
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    1. 40 and 1 .45

    Sent from my SM-G935V using Tapatalk

  11. #10
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    thanks guys, list has been updated!

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