Ken didn't promise to create guns, just the barreled actions. That fact in itself significantly reduces the production problems. Stockwork is hand labor intensive and involves variable quality of the material (wood) and more difficult quality control of hand labor. It's such a big issue that the likes of major gun makers pursued synthetic material for machine making of stocks for production guns.
But, Baron is right, there's always the law of unintended consequences that lurks in the background and rears its ugly head when least expected. Still, hashing the pros and cons of potential designs/changes is always good. Sometimes it reveals proven, simple designs that are easily implemented and provide high value.
