Lots of people just sand the factory stock smooth and hit it with their favorite krylon rattle-can camo jobs and call it good (it is free-floated).
You'll want to check your stock to make sure it is truly free-floated. Mine makes very slight contact at the front edge of the stock. I'll hit it with a little sand paper or a Dremel and all should be good. Just something to be aware of.
I don't think it was advertised.