Converting a H&K USC into a UMP

Steve Johnson
by Steve Johnson

The H&K USC carbine is the civilian version of the H&K UMP sub machine gun. The USC has a fixed Dragunov-style stock while the UMP has a folding stock and free standing pistol grip. Apparently you can convert a USC into a UMP. Les wrote to me saying …

I recently shot a multi-gun match which required the use of a
pistol-caliber carbine and ran into two guys that were using HK UMP’s.
At first I thought they were LEO, but they said that they had just
converted HK USC’s to UMP’s by following the process below (you’ll
have to scroll)

http://www.hdps.org/htm/3.htm

The guys did the conversions themselves, and the pieces were high
quality, all HK part UMP clones in .45…

H&K USC into a UMP conversions

Very nice.

[ Many thanks to Les for emailing me the info. ]

Steve Johnson
Steve Johnson

I founded TFB in 2007 and over 10 years worked tirelessly, with the help of my team, to build it up into the largest gun blog online. I retired as Editor in Chief in 2017. During my decade at TFB I was fortunate to work with the most amazing talented writers and genuinely good people!

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  • Other Steve Other Steve on Oct 21, 2010

    I missed this topic a bit. Unless you SPECIFICALLY want 45acp, and want the recoil that comes with a very light gun, I would suggest evaluating whether or not you really want a UMP - For The Cost.

    That is, the MP5 was going to be phased out because it cost too much to build. Not because it was a bad gun. Albeit a tiny bit heavy it is supposed to be for full auto use.

    The UMP was supposed to replace it but turns out there is a difference between high quality roller locked steel and a disposable blowback guns.

    The UMP is definitely a step backwards for HK. Although it does look VERY cool. If they would have hit their goal of $600-$800 I would be all over it! But at $3,000+ you've got to out of your damn mind.

  • Matt Gregg Matt Gregg on Nov 25, 2011

    I think I'd much rather save the cash and buy a CX4 storm if I wanted a .45 ACP carbine. Or even a mech tech conversion for a glock 21.

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