Optics Planet has many Hi-Lux repro scopes for sale. They have a Malcolm & a USMC scope, both around $400. I believe that they also make a repro of the M73B1. I haven't heard complaints, they seem to be a good value for those who don't want to spend a few thousand on an original scope.

I would not want to pay serious money for a homemade repro sniper without having a gunsmith check it out first.

Neal