Originally Posted by spaceman13
The previous owner lost the parts for the functioning bolt catch so any good gearbox will do.
I got it really cheap because the internals kept failing,but the externals are beautiful since it never worked long enough to game it.
I wonder if the modify gearbox from airsoftparts would drop in with no mods required.
My experience with Modify shells is the reinforcement at the front makes it get stuck in the upper receiver from some brands. It did on the KA I worked on, not sure about VFC. I don't like the Modify gearbox though.