With the desired layers of clothing.
Measure from your son's index finger tip along the inside of the forearm to inside of the elbow w/ his arm bent in a 90 degree angle.
You now have his Length of Pull w/ the required layers of clothing in the equation.
If,you are indecisive,add 1 inch to the LOP measurement.
Measure from the trigger shoe face aft & stick a piece of painters tape for the LOP.
Wrap a piece of painters tape around the stock & cut the stock w/ a coping saw.
Sand the cut off stock on a flat surface to square up your cut.
If you forgot the include the butt plate thickness into the equation,you have another cut to make.
Measure twice.
Cut once
