Polyurethane on wood stock

[cornchuck]

I don't know if this is the right place to post this but I have a couple of wood stocks I would like to put some protectant on. Can I use spray on polyurethane that can be found at your local lumber yard onto the stocks? I want to use a non-gloss spray to keep the look of the original finish.

What else can I use if this should not be used. I am also going to treat the inside of the stock so moisture won't effect the stock as much as untreated.

Jason

[Loner]

I've used automotive polyurethane and hardware store polyurethane on stocks. Not a
problem.