Gearing tends to strip out, auto and manual feed not reliable always.
Overall, I enjoy this modification, It would be nice however to find replacement parts for the internals vice buying a new one. Fairly easy to install. Does have a bigger profile, the flat nose, easy to be fixed with some body putty and inginuity. I have not seen a huge increase in CO2 or Compressed air usage, I use both RT and cyclone. maybe a 500 round decrease per 20 Oz tank.
I say go for it, for me maybe i have a jacked up one, But i will definetly support it!