No falcon rail, too heavy, non-function shroud volume, but it looks great. Function over form!
Rear receiver mounted red dot, CF shroud with integrated moderator. This isn't the final length, just a test fit. I'm not sure if the CF shroud is low enough to use the stock rear sight. Probably not, thus mandating the use a red dot.
One concern is if the valve does an air dump is where are the piece going to fly? Best to wear eye protection and not have anyone standing to the sides or of course anywhere downrange.