Nothing will fit as it comes, the old Walther accessory rails were totaly diferent and back then Walther had all their own accesories, (except the bipod!), we had to file down the Anschutz rail bipod fitting back then to fit on a Walther. You need to reprofile the bit that slides in the rail so get filing! Now all the manufacturers (including Walther have a standard rail)
I gave one of my old ones away a few years ago, and I have one left which I use on my Swing 7.62 which is in an 80's Walther stock.
Have Fun.
Robin
Walther KK500 Alutec expert special - Barnard .223 "wilde" in a Walther KK500 Alutec stock, mmm...tasty!! - Keppeler 6 mmBR with Walther grip and wood! I may be a Walther-phile?