Good Lord.!!!!! Where to begin...
Yes, oven cleaner is one way to STRIP a stock but not many here would suggest that method but as they say, To each his own..
I know the oven cleaner isn't the best method but the walnut oil works great, just try it once on a cheap R.C. Mauser or Mosin Nagant. The wood looks great. Just use the cheap walnut oil you can get for cooking.