I'd like to ask for help defining (succinctly) the term "hand-made" or "hand-crafted" as it applies to the making of of double-barrel sporting shotguns or rifles.

To narrow that, I'm really thinking of the criteria for "traditional" gunmaking as it was practiced in the pre-CNC/CAD-CAM era but modern enough to include the use of machinery -- i.e. Industrial Age and after.

I'm thinking: non-interchangeable components, manually operated machinery, and fitting, assembly and finishing by hand.

Additions welcomed and debate encouraged.

Thanks