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No Spidey07, there isn't a domestic or foreign makers of guns of guns when established foreign and domestic makers of guns of guns have the inside track of economy of scale.
I am a CNC machinist myself, and I have some understanding of how difficult making an effective automatic weapon is. Even if all the technologies are well established, combining all the technologies is and remains the almost the exclusive providence already established gun makers.
As I could also argue that any competent CNC machinist could create a exact clone of any modern domestic or foreign car. But at what cost and how long would it take me or anyone else to duplicate all those technologies.
As according to you spidey07, the domestic auto market should be flooded by every domestic CNC machinists who can undercut the costs of foreign and domestic automakers.
Tell us again Spidey07, how many self made cars are available in the USA?
As I will call shens on you spidey07 if you can't site a single example of a single US auto that too is well within the capacity of a competent CNC machinist.
Just come up with just one single US auto to prove your contention and I might believe you. Failing that, and I will call you what you are, namely an idiot with a failed bullshit hypothesis that does not exist in the USA.
If you were a machinist you'd know that the ONLY part of a gun that is even remotely difficult is the barrel, and even then the hard part of that is deep center drilling and cutting/displacing the rifling. And those aren't even hard, they just require specialized uncommon equipment.
The rest can all be milled or pressed or stamped in a garage on a $1000 budget.
Cars have thousands of parts including wiring and computers, tires, formed panels, you cant do it all on a CNC. The parts of an automatic rifle on the other hand you can mill every last one except the barrel easily, mail order the appropriate springs from a hardware store, etc. It's not like its hard to understand how a trigger, sear, hammer, and disconnector fit together. A steel bolt with locking logs isn't hard either.
While your at it, double hook the hammer, add in another sear with a bolt carrier tail to trip it, and a disconnector blocker on the selector switch. The mechanics involved in a gun are the simplest around.
AK or SKS would be the best bets since they were basically designed to be built by farmers with whatever shit was laying around.
But even all that would be unnecessary in the face of any potential bans. Just stamp/press an illegal receiver and all the other parts you can mail order. Anybody with the mental capacity to use tracing paper can making an AK receiver.
And if bans went further? Still don't have to make barrels, grab them from a $199 hunting rifle and screw them into a barrel extension/trunion made on a lathe with locking lugs for your new bolt. Drill a hole in the barrel for your gas tube, machine a interference fit gas block and there you go.
Sorry guys, guns aren't going anywhere.
If people haven't made their own, it's only because its easier to just buy/steal one already made so far. the part about it being illegal wont matter if they are all illegal anyway.
Even ammunition is easy. Casting lead? Not a problem. Extruding and pressing brass tubing at home in a 20 ton press? No problem. Powder? The 3 primary components of powder are everywhere.
In fact the only thing tricky about ammunition are the primers, and even if some of those raw compounds arent available by name, they can be distilled and refined from existing consumer devices like mercury thermometers and thermostat switches, hexamine camp stove fuel bars, medical disinfectants, etc.
OK Im going overboard, but it's fun to show that it IS still possible and get the oppositions panties in a bunch that no matter WHAT you do it's still impossible to rewind the clock on gun technology.
2/3 of the history of the world fought wars with guns and ammunition made by hand before the industrial age and mass production. Besides home made guns would only be used in the first sneak attacks after which modern weapons and ammunition would be picked up off the victims...