Difference between the normal MSFFB2 and the revised

[crim3d]

I've just found a good chance to get an almost new MSFFB2 with red traslucent trigger. I already have the silver trigger version, but as this one is supposed to be better, I'd like to know if someone knows in what features is the revised version better. If someone knows... because a search in google doesn't come up with anything more precise that "it's better".