Rolf ,
You may have to make your own or search for European sources. Of the two companies making them, one went out of business and the other is for sale but has ceased production.
Also, if you plan to buy off ebay, be aware that the ones by Dembart are only good for a few guns before they go dull and they can't be sharpened by any method I know of. The ones by Gunline are of a different design and can be touched up.
Only the initial layout is critical. Once that is done, you can finish pointing them up with various diemaker's rifflers.