Quote:
Originally Posted by audi_bhoy
Make sure the hop-up unit also have the little spring that pushes the unit against the gearbox, otherwise it may cause the nozzle not to reach the rubber and it wouldn't seal perfectly.
You should also make sure that the SHS nozzle has the same lenght has the original nozzle. A shorter nozzle would cause the same thing as the unit not seating againts the gearbox properly.
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That tiny spring at the top of the hop unit isn't very effective. You're better off with using some o-rings on the inner barrel.
Hell, even G&P ships their guns with a spring on the inner barrel these days.