how to proced with stock???

[BRDHNTR]

If you decide to strip the stock completely with the above method, then you might as well steam out the dents/dings. Take a damp cloth/towel and place over the dents and with a steam iron go over them carefully, this will usually lift out the dents. when the wood is dry, then you can lightly sand with high grit paper till smooth.

But I would agree with smoothbore and follow his recommendation before completely stripping the stock. Also, bear in mind that if you strip the stock completely and then refinish, you may have to do the same to the fore end as the new color on the stock will not otherwise match the fore end wood.