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UMP 9mm Conversion Kit - 3 Lug & Threaded Barrel

SKU: HKP-02285

HK UMP 9mm Conversion Kit - USA - 9mm

UMP/USC conversion kit will convert existing USC-UMP conversions to 9mm. This is a simple drop-in conversion for those that have already done the USC-UMP conversion. The conversion parts are a drop in with the total swap over of parts taking about 5 mins.

Each kit includes:

  • 9mm Barrel UMP
    • HK Parts 3 Lug - Threaded Barrel (Perfect for use with suppressors or MP5 flash hiders)
    • 1/2 x 28 Thread Pitch
    • Thread Protector Included
    • 8.25" length
    • 16 Fluted Barrel
  • 9mm Semi- Auto Bolt Carrier
    • 9mm Extractor
    • Retaining Pin for firing pin
    • Firing Pin Assembly
  • 9mm 30 Round Magazine (HK German Factory)


Each 9mm kit gives you 2 of the 3 needed 922 compliant parts needed (barrel and bolt).



Condition: New
Origin: USA
Caliber: 9mm
Magazine Capacity: 30
922r Value: 2
Price: $699.95
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UMP 9mm Conversion Kit - 3 Lug & Threaded Barrel
UMP 9mm Conversion Kit - 3 Lug & Threaded Barrel
UMP 9mm Conversion Kit - 3 Lug & Threaded Barrel
UMP 9mm Conversion Kit - 3 Lug & Threaded Barrel
UMP 9mm Conversion Kit - 3 Lug & Threaded Barrel
UMP 9mm Conversion Kit - 3 Lug & Threaded Barrel
UMP 9mm Conversion Kit - 3 Lug & Threaded Barrel
UMP 9mm Conversion Kit - 3 Lug & Threaded Barrel
UMP 9mm Conversion Kit - 3 Lug & Threaded Barrel
UMP 9mm Conversion Kit - 3 Lug & Threaded Barrel
UMP 9mm Conversion Kit - 3 Lug & Threaded Barrel
UMP 9mm Conversion Kit - 3 Lug & Threaded Barrel
UMP 9mm Conversion Kit - 3 Lug & Threaded Barrel
UMP 9mm Conversion Kit - 3 Lug & Threaded Barrel
UMP 9mm Conversion Kit - 3 Lug & Threaded Barrel
UMP 9mm Conversion Kit - 3 Lug & Threaded Barrel
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UMP 9mm Conversion Kit - 3 Lug & Threaded Barrel is currently not available, but we thought you might be interested in these related items:

HK German UMP 9mm Extractor

HK German UMP 9mm Extractor

Price $51.95

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Product Reviews

Write your own review


"9mm Conversion"

william wilder on 8/15/2012 10:48:42 AMVerified

Overall Product Rating:


Product was as described and has worked fantastic. Great customer service


"I put this on my postie"

Chopstix Kid on 8/4/2011 10:44:34 PM

Overall Product Rating:


Just got my postie UMP in and this is the kit that went on it. I also have the 16" kit on my USC/UMP conversion gun. I have a bunch of 3-lug accessories so this was the perfect kit. Fit, finish, everything is exceptional.


"Awesome conversion"

DanO on 8/23/2018 7:27:03 PMVerified


Order Fulfillment:


Desired Compatibility:


HK USC Conversion

Product Quality:


Overall Product Rating:


I bought this test out with my USC conversion. It's easily swapped in a couple of minutes from .45 to 9mm. The recoil, or lack of it, shooting 9mm is fantastic easy to stay on target too. If you're thinking buying one, do it.


"9mm Conversion"

Regs on 6/9/2011 8:23:30 PMVerified

Overall Product Rating:


Had to mill off just a bit (.01") more plastic on one side of my upper so the mag would "click in" / seat perfectly- but no biggie. Ran 400+ rounds through it during a 3-gun competition practice (semi, but pulling as fast as I could acquire) with ZERO jams- thing is FLAWLESS and runs like all Hell! I figure I already saved $100 running 9mm vs .45 ammo on day 1... The gift that keeps on giving!