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G&G UMP Hop Up Unit

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Old November 19th, 2019, 14:51   #1
Leadfoot
 
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Join Date: Nov 2011
Location: Kitchener, Ontario
G&G UMP Hop Up Unit

I have a G&G UMP that has a P* Jack engine in it and I am looking to upgrade the barrel and hop up unit (currently both stock).

As it used a V3 gearbox, would an AK hop up unit be the one to get? I'm not familiar with the AK hop up unit as I have only had M4 platforms before, but the slide adjustment appears to be the same as what the UMP uses.

Thanks in advance!
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Old November 19th, 2019, 15:54   #2
cetane
 
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Join Date: Jun 2010
Location: Markham & Stouffville - Ontario - Canada
It’s proprietary to the umg body. It’s a fine hopup unit. Just plunk in a good rubber if your factory green one is worn out.
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Old November 19th, 2019, 16:16   #3
Leadfoot
 
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Awesome! Thanks for the quick reply.
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Old November 19th, 2019, 18:34   #4
Kartoffel
 
Join Date: Oct 2016
Location: Montréal, Québec
I owned a G&G UMP before and the only problem i had with the hop-up was that it would reset itself while firing because the slide ajustment was loose. I solved the problem by putting something behind the slide adjustment to prevent it from going farther back so keep a eye on that
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