I have had both the Walther LP53 and the predom lucznik and whilst the Walther looks better made I have to admit that I liked the predom lucznik better it is stronger and I could shoot it better.
I think to keep the blacking on the barrel of the Walther LP53 in good condition you need to use the wooden ball thing to cock it bit of a pain but if you do not use it the blacking will come off the alloy barrel.