Hi,some rifle i did refurb,iron steam for the dent, i used shellac on k31,1911,and rest linsed oil LBO on other,vertilli rifle,1889 only alcool to clean it and oiled after.
For the shellac you need a bit of experience to apply that stuf.....those rifle are so clean and well preserve,its a charme working on it,thank for your appreciation.
K31 mount found it at accumount(ebay)work very good and stable