No..no i have not & i dont think i can personally do it without it exploding in bits & bobs so i'll be begging potential threat for a trip to his so he can see whats up with it (it was firing fine 5 minutes ago changed to a pmag then it started just making a whirring noise)
i dont think it does it just sounds like its winding up or something like that it definatly is not touching the spring might be something stupid like a half cocked cycle causing it to fanny up but really internals are not my strong point
i shoulda said pistol grip or what ever they call them i'm not all awake yet..i got one screw off but it did nout so will have to take it to brothers (for more screw drivers)
if it's just whizzing then either your motor is too low or something in the gearbox has stripped, likely the piston as that's the most fragile part.
Thankfully it's a cheap fix regardless of what's broken, new piston will set you back no more than £15-20 for a good one, gears you can pick up for next to nothing.
Thanks for all the replys weill i'll crack it open once i get to brothers this afternoon & see whats what then i'll sort out a replacement for what ever is wrong & yeah will let you know what was wrong once i know