The future of the American firearms industry, at least for Patriots, is to be found in the build-it-yourself realm.
In places like Pakistan firearms are built with minimal tools and professionally manufactured supplies. Here's a peek. You will not find many CNC machines being used in the production of these weapons.
But we are not Pakistan - yet. The average American does not need to build a 1911 frame or barrel from scratch. But - he can. FedGov laws still recognize your Right to build a firearm for yourself, without their intrusion. No 4473. State laws vary - but many Patriots anticipate a time in the near future when such laws will not apply.
For now you can buy parts that have been manufactured with excellent precision. Soon - maybe not.
Do your preps include a supply of 80% receivers and frames? Have you acquired the tools and skills to finish them out? Do you have a healthy supply room of slides and barrels and miscellaneous parts so you can stand up a re-supply effort when you can no longer order from Brownells?