FWB FWB 300 facelift posts ..Pics

Hi, I have just joined the forum after seeing these beauties! I came across a lefty FWB 300S Universal at a steal, but I am a righty..
So I brought a 300s stock from Germany to restore, and may hold on to the lefty stock, or restore it. Would there be any demand for a LH 300s U stock only?

They are such a lovely gun to shoot, the engineering is great and surprisingly easy to strip down considering all the pieces!

Also, saw this:
JonnesCame out well mate! Did you follow up on that trick for a deeper black on the stippling? Because it sure looks like it. ;) 
Those things are sooooooo much fun to work on.

Apart from the marker, what was the tip for deeper black?

Thanks!