Hi all, I have been given the chance to dip a factory Remington synthetic stock, I am reading on here the method of choice is to blast it with 100 grit A.O. My issue is that I can only find 80 grit local and this stock is a Christmas gift. Also I have a cabnet that I bought used and have no idea what kind of media is in it or what has been blasted in it, so I don't want to take any chances. What it the 2nd best option for prep in your opinions? Thanks in advance.