Well he must be one handy guy - armorer, mechanic, welder, painter, researcher, and who know what else, all in a single package!
When we were kids he would get a new motorcycle or car…and the first thing he would do is take it apart, to see how everything went together. Not good for warranties…but he can fix and fabricate anything.
I am in awe of those skills. Choice of wives? Not so great. Ha ha.