Joined
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2,180 Posts
Change the o-ring and test with the old hop up unit if it came with it to see if the problem lies in the hop up unit.
Posts by inthetallgrass
1 - 2 of 7 Posts
Joined
·
2,180 Posts
Prob a bad airseal in the hop up unit, there are two o-rings in it and then the rubber itself. Check those.
1 - 2 of 7 Posts
