The way manufacturers report their specifications seems to be a bit of a wild west at the moment and there are absolutely critical factors such as anti-cogging and heat management that can make or break the product
I hate thet all the grips are going light weight metal. I prefer the lighter alpha grip. Also makes tuning the rhino center point easier than with my heavy warthog grip.
Tianhang's use nylon with CNCed aluminum connector/locking ring (and they have otto-esque push buttons and triggers Their f-16/a-10c grips are under 400g iirc. excellent choice for FFB bases