I love my MP9 with and, without the suppressor for that free loudener. But one issue that I don't seem to much information on is the bolt, itself.

So sometimes the bolt gets ever so close to returning home but it doesn't reset the trigger causing a failure to fire, everything else seems to be working as intended, but I've got to manually recock the bolt every time only for it to shoot once.

I've read that it's got to do with one of the return springs? (Part 73/162/87) and that I've got to extend one of those parts somehow but idk.

So far the temporary solution is for me to overlube the bolt just a bit so i get a whole day's worth of play, but it is abit annoying whenever it does happen.

It might help to note that i use slightly higher pressure green gas at 14kg/cm2

As well as, i did notice that when lubing, the nozzle was abit stiff in that it didnt move back and fourth quite as smoothly/freely as say the nozzle on my WE G34 so idk if there's something to that.

Any help would be neat.