Had to drill out (counter sink) the screw holes to get the threads to grab and get the screw heads below the surface of the grip. The inserts cause the carbon portion of the grip to stand off the back plate, and the back plate isn't cut properly to fit the trigger frame. I can see a sliver of my battery on the right side. They are also quite wide, which is annoying because I bought grips that don't wrap around to reduce the bulky feel in my hand.
They look good, I like the concept, but as far as I'm concerned the details were largely ignored on this model.
Ego 6 grips 
