I haven't tried fitting that nose piece yet. I'll probably sit on this project for a while anyway to see what comes about receiver wise. Who's CSS? I read Wiselite arms was working up an m53/mg42 receiver. I'd rather go a complete or 80% receiver route rather than trying to weld up all these pieces. Depending on $$ of course.
In the mean time I'm helping my son build his Romanian AKM. Finished the RPK on New Years. Still needs refinishing, but it's a hoot to shoot!