The American walnut Krag stocks were stained at Springfield with 'logwood' stain, which gave them a pleasant reddish-brown color.

When woodwork was completed, they were subjected to a soak in hot 'vats' of linseed oil.

There were also 30,000 Krag stocks made from Italian walnut blanks. These are lighter in color, but, sometimes were stained locally to better match the other Krags in a unit.

'Marvel Oil' has no place on a wood stock, use Linseed Oil thinned with turpentine.

Howard's Feed & Wax, Carnauba wax, or Furniture polish like 'Pledge' or 'Liquid Gold' should do no harm to a rubbed Linseed Oil finish.

IMHO and experience, discussion of wood finish and wood care products, will often start a Holy War.

Never use Marvel Oil or Oven Cleaner on wood!