I did those myself. Pretty easy, took about 1 hr for the first and 40 minutes after. Get a comfortable grip on the forend, use a pencil and mark the top and bottom of each finger. Using the large sanding barrel from my dremel sanded in almost 1/4" then left and right to just short of each pencil mark and just a little front and back. Finished with 220 grit or finer hand sand.I love the finger grooves ! How cool ! Did you do those yourself .I would love to have a set done.