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On Mon, 05 Oct 2015 23:01:06 -0400,
wrote:

On Mon, 05 Oct 2015 21:51:37 -0400, wrote:

On Mon, 05 Oct 2015 19:59:11 -0400,
wrote:

On Mon, 05 Oct 2015 19:22:44 -0400, wrote:

On Mon, 05 Oct 2015 17:25:21 -0400,
wrote:

On Mon, 05 Oct 2015 17:05:51 -0400, wrote:

That might do something in 20 or 30 years but we need an answer now.
There are hundreds of millions of guns here now, if they stopped
making them tomorrow.

===

Before too long someone will figure out how to make an automatic
weapon on a 3D printer. Control that.

As soon as they make a 3d printer that works with steel "ink".
Right now all they can make are the parts that don't see the pressures
and the impacts. Guys have made the frame and some other parts.
OTOH those parts that can't be plastic are generally consumables so
they are not serialized or controlled. (barrels, firing pins,
extractors, springs and such)

===

Even the 3D printers of today can be used to make high precision
templates which an amateur machinist can use with jigs, routers,
Dremel tools, etc. to turn out everything that's needed. It's just a
matter of time before the plans show up for downloading along with a
couple of "how to" videos on YouTube.

If you have a lathe and a milling machine you can make pretty much
everything but the barrel, assuming you are making a rifled bore.

I made a smooth bore .22 that worked from a car antenna and a bunch of
fiberglass wrapping. It was chucked up in a cap gun with most of the
hammer filed away. The problem was the brass came out the back almost
as fast as the bullet went out the front.

===

Sounds like you're in the same "lucky to have survived childhood"
category that I was. Nowadays you also have to make a video of it to
truly qualify as a stupid kid trick.

It's fairly easy to improvise a crude milling machine if you have some
woodworking tools, small grinding wheels, cross slide vice, etc. I
have no idea how to make a rifled barrel but it's not really necessary
for short range. There's probably something on YouTube however.

The traditional machine (18th century) was just a scraper and a jig to
keep the twist consistent but it was usually just 2 lands and 2
grooves. If I was doing it I would try to scavenge a barrel or just
buy a replacement barrel from a gun parts place.
Like I said earlier, most of the parts in a gun are available without
being serialized and tracked.
That guy in Idaho was only casting and polishing the AR receivers and
buying everything else online.

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