Use 0000 steel wool or better yet bronze wool, Brownell's sells both. I use Johnson's Paste Wax as a lubricant, rubbing the 0000 in the wax and gently "floating" it over the stock. Your strokes should be straight in line with the grain of the stock and the full length of the stock. When you have covered the complete stock, set it aside until the wax forms a haze. Buff the wax with a new microfiber towel and examine to see if the de-glossing is to your satisfaction. If not repeat the operation, if it is apply another coat of wax with and old t-shirt and buff with the microfiber towel. Take your time and don't get in a hurry, depending on how glossy the finish is it may take several passes with the 0000 and wax.