Hk MP5/40 damage
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Thread: Hk MP5/40 damage

  1. #1
    TPMoutfitters's Avatar
    Join Date : May 2015
    Location : Carrollton, Texas
    Posts : 71
    1 Post(s)

    Default Hk MP5/40 damage

    We wanted to share some heavy damage to an MP5/40 dealer sample that needs some serious repair. They mixed up ammo and slipped a few 9mm rounds though the gun. There are 2 bulges in the barrel and the catastrophic barrel failure. The receiver took a major impact/load to the recoil system. Itís got heavy roller bumps and the rear takedown pin was blown out at well. Be careful on ammo this is not our first one due to incorrect ammo.
    Attached Thumbnails Attached Thumbnails Hk MP5/40 damage-1e8ffb36-9410-4cd7-ba1a-e576620636f4.jpeg Hk MP5/40 damage-1c5cd765-a005-4cc5-ba45-99900839c1b0.jpeg Hk MP5/40 damage-272606b2-f801-4b7e-8a7a-9d4114d61c26.jpeg Hk MP5/40 damage-d2984777-dbf5-438d-b937-79d98787e909.jpeg

  2. #2
    Desperately Needs Treatment
    Anopstyx's Avatar
    Join Date : Sep 2012
    Location : Lancaster, PA
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    Holy crap!!! I hope no one was hurt! How was the 9mm round able to fire in the 40??? Just held onto the bolt head by the extractor?
    Spent most of my tax return on Hk parts, booze and ammo....the rest I just wasted

  3. #3
    HKPRO Professional
    viriceman's Avatar
    Join Date : Feb 2002
    Location : Virginia
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    Iíd say that was caused by a bullet stuck in the barrel (squib round). Iíve witnessed more than one 9mm being shot out of a .40 pistol (whole other story there) and all projectiles exited the barrel with the only malfunction being that the firearm didnít cycle and the brass got super expanded. I guess a 9mm projectile could get stuck in a longer carbine barrel but Iím leaning more toward a squib round. And I donít think you can drop a 9mm round down a .40 barrel either. (Not trying to be argumentative and I donít doubt what TPM has stated and am glad they have posted this).
    Semper Fi!
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  5. #4
    The Librarian
    Oicani's Avatar
    Join Date : Feb 2013
    Location : PA
    Posts : 5,278
    66 Post(s)


    Thatís going to be one expensive repair to make....
    "...but just like every other clone, they are copies of the original and copies are never as good as the original."

  6. #5
    Desperately Needs Treatment
    MW2152's Avatar
    Join Date : Jan 2013
    Location : Bougainville & Tulagi
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    Damn, I bet that sure stung the hand of whomever was shooting it, hope they didn't get hurt.

    I would mount that barrel on a wooden plaque and hang it over the firing line or loading area, as a solid visual reminder to be careful.

    I have been present several different times when people shot 9mm in 40 cal guns, and I will be honest in saying it generally took the people firing several rounds and doing malfunction drills, before it dawned on me or them that something was wrong and not sounding right. I can see how it happens and gets to this point.

  7. #6
    SkudShark's Avatar
    Join Date : Apr 2016
    Location : WA
    Posts : 66
    1 Post(s)


    Was the a range rental perchance?
    One of those picture threads you’d rightfully be able to play Mclachlan’s “In the arms of an angel” to, that’s just depressing xD

    Either way I dread that repair bill.

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