Quote:
Originally Posted by RX93
I recently bought a CYMA P90, which was working out of the box. After I changed the spring for a Modify S90 to lower the FPS, the gun will either not fire, or fire 1 bb every 10 or so shots that goes about 20 feet then drops. The gearbox works when out of the gun (I can feel it pushing out air) so I don't think it's a compression issue.
My guess is that it's something to do with the hop up unit/inner barrel, but I don't have any spare parts to check that.
Any help would be great
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Hop up unit on p90 breaks easily... Check for any breakage.
Make sure you push it in all the way. Screws/ shim/plate in the butt stock in place?