I would alter the description to hand built rather than hand made .The deciding factor come in the degree of and quality of machining . A modern Beretta or Browning has parts that are so well and accurately made that they can be assembled with only the smallest of adjustments to the regulation of ejectors for example . Another post regarding Webley guns are a good example of being hand built ,all the parts were machined but with sufficient material left to allow parts to be individual filed up and fitted ,I can not remember how many man hours were involved but it would have been around 50 for a 700 not counting machining time . The gun trade has always used machinery or mechanical devices in some form or another , . It is a fact that many production methods and tooling developed from gun trade practices ,guns especially military weapons being one of the first mass produced pieces of mechanical apparatus .
