The newer actions, made on CNC machinery, are a lot better than the older ones where they were moved from station to station for each operation required. CNC made are grasped by the machine and many operations are performed before the action is removed from the machine. This eliminates human error. A CNC will do nothing its' controller (computer) doesn't tell it to. A novice might feed raw material into the machine and remove finished work, but the programmer of the machine isn't [a novice]. Long run production CNC can even be programed to run a certain number of parts and then shut down demanding cutting tool changes (the darned thing will tell the operator which tool to change) and can't be restarted until it has been reset. It takes no skill to take an insert (cutting tool) loose and turn it/flip it/ install a new one. Chances are with either an old one or a new one primary extraction won't be there. It's a false rumor that the older ones are better. Either way, they're both made on a production basis, nothing 'custom' about them.