Umarex MP7 hop up problem.

[bulletman]

Hi I have a problem with my hop up,when I fire bb's they go skyward even with the hop up fully off.Its also jamming up as well,I've read a few threads and its all pointing to a swollen hop up.I'm willing to give it a go and change it myself the only problem I have is the allen key size on the fire selector switch the size is very small doe's only one know the size so I can get one any help will be gratefully received .

[Tariq182]

Re: Umarex MP7 hop up problem.

I just bought an allen key set just so i could take it apart XD
Should be a 0.9mm if i remember correctly.

Trigger is a PITA to get back into the gun though. These might help:
http://www.youtube.com/watch?v=dEq9OtjlpsE
http://www.youtube.com/watch?v=TtIoW...feature=relmfu

Can get a spare OEM rubber or get a falcon hop rubber. Although harder to find. KWA will ship directly if you email them.

[bulletman]

Re: Umarex MP7 hop up problem.

Thanks for the help,just bought a micro allen key set so there should be the right size in there hopefully .I've ordered a REAPS A+studios hop rubber should be here sometime this weekI'll let you know hiw I got on with it cheers again

[bulletman]

Re: Umarex MP7 hop up problem.

I followed the video that was link excellent video talks you through process of disassembling it and fitting the hop up and reassemble ,only problem was fitting the trigger took over an hour the spring is very stiff so it was hard to push into place other than that it 's a easy job to do .