Uh oh, just realised the piston on my m4 is all the way back, and has been for a day now. Anything I can do to de compress the spring? (Bare in mind that it doesn't fire and I cannot access the gearbox.)
well.... um... you will need to at least have the gearbox shell... this is what you do.... take off the grip and use a paper clip is small pliers to pull the anti reversal latch and viola
