I know this is not the right place for this, but I wanted to pass this trick on. If you ever come across an old grungy stock that is black from years of abuse and you want to bring it back to the natural look then oven cleaner does an awesome job. All you need to do is put your stock in the bath tub and spray the oven cleaner right onto the stock til it is on thick ( you will want plenty of ventilation maybe a fan or do it outside) . Wait for about 15 mins. or more and you will see all the grime come out. Spray off with the shower and let it dry and you will see it looks like it is still in the factory ready to be cured with oil. If it is a walnut stock then you will even be able to smell the wood. I always use BLO to cure the stock when it's dried. I hope this helps it has worked for me many times.