VFC mp7 tapp adapter short stroke / misfeeds
Hey my fellow silly war nerds. Picked up a VFC mp7 and got a tapp adapter as I will be playing in colder temps. Ran it this weekend and had mixed results. Set the npas to allow for about 1.3 - 1.4 joules and what seemed like enough kick for the bolt to operate fine. Most shots were good to go. But occasionally and sometimes many shots in a row would not feed or be significantly weaker with a weaker blowback sound. I observed that the bolt only retracted about a half inch when misfeeding, the nozzle didn’t leave the hopup resulting in not new bb in the chamber. From what I’ve researched and can feel, the nozzle return spring is quite weak. Anyone have a similar issue, if it is the return spring where can I pick up a strong one that’s in stock? The gun is properly lubed and would always fire, just sometimes not with a bb or with a lower audible and physical blowback.
Thanks for the help (video shows no issues, just normal operation on dry fire )