I'm pretty sure this is an old topic, however, with everything going on with KWA I'm wondering if the 416 is worth the price tag? I know externally it's top notch, but it seems the internals are "ok" from the videos I've seen.
I have an older VFC 416 (from before the umarex trades) and I love it. However, I got it just at the externals for $150 and there are no VFC internals whatsoever in it. I can't really speak on the quality of VFC internals from experience, but from what I have seen they are pretty good. The most important thing is that they are 100% TM compatible, meaning that they can easily be fixed if something goes wrong, unlike the KWA which has a few notable quirks. All of the components that I have used in my 416 were a perfect drop in fit.
All in all, I would say it's worth it. You will not be disappointed by the externals, and the internals should last a long time if you run them on a 7.4 Lipo or a 9.6V Nimh battery.