AnotherOopsie Posted August 30, 2017 Posted August 30, 2017 Hi all. Recently picked up a KWA MP9. First day it was running fine, and now when I fire it, it vents slowly after the first shot. Please note this is in all 4 magazines, brand new gun and I have tried abbey predator green 144a, nuprol green and nuprol red just to see if it will feed/cycle but to no avail. Any suggestions?
alex90 Posted August 31, 2017 Posted August 31, 2017 either the piston head/nozzel is dried up and needs oil or the nozzle return springs need looking at
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