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Thread: HK USC to UMP
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December 31st, 2018, 05:09 PM #1
HK USC to UMP
I'm in the process of converting my USC into a UMP clone. Just got it back today from Sean at CDI. He does great work, highly recommended! I had him mill out the 5 UMP vents as well as open up the receiver to accept the double stack magazines. Functionality is great! Now onto the Form 1 to SBR it.
IMG_0734.jpgLast edited by Seabee CO; December 31st, 2018 at 06:03 PM.
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January 6th, 2019, 03:46 PM #2Member
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Re: HK USC to UMP
I did this to my USC in 2010 and never looked back. Great mod and a super fun gun to shoot!
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