It works fantastically, extremely accurate and feeds 100%.  Yes, it  sometimes keyholes but I am of the opinion that a round keyholing into someone's chest is likely to ruin their day.  I will more than gladly buy any or all of the 9mm Aguilla I. Q. anyone might want to get rid of.  Now back to my question, anyone know of a low recoil ammo for the R9?