I was at the range the other day and 3 range officers told me to grip the gun the same way. I'm new to shooting, so the only stuff I know is what I've read off message boards and websites. I've been trying to emulate the grip shown in the Rainbow Six promotional picture on the hkpro site (http://www.hkpro.com/r6usp.htm right thumb bent downwards with left thumb hooked over it). The RO's told me to put my right thumb as far up as possible keeping it parallel with the slide right below the cocking serrations of my P7. They also told me to put my right thumb right on top of the curvature behind the left thumb, and to put the left thumb against the bottom of the frame below the slide and above the trigger guard. They also told me to rotate my left hand counterclockwise to keep the mini beaver tail pressed down against my right hand. This grip does not feel very comfortable to me, but I don't know what I should believe.