hi there just wanted to know what your opions are my grizzly states it should be braced between 7.5"and8.5" where is the measured from? is it to the back of the riser or the deepest part of the grip as there is around an inch diference.

Deepest part of the grip is the standard.

moebow is right

moebow is right.  I have several Grizzly's.  I start at 7.5" and work up.  Most of mine seem to be good around 8-8.5".

Cheers guys thanks for your help