[JRandomFreeper]

The video shows the pistol firing a standard .380 from the plastic barrel.

This, by the way, was an engineering proof-of-concept, not a finished product. V1.0, in other words, not even beta test.

And the gooberment is trying to shut it down. And failing.

Also, there have been plastic cartridge cases made and used before. Not with 3-D printers, way back before then.

/johnny

[null and void]

Back in the day of crappy steel, some cannon were made of relatively thin steel barrels reinforced by winding miles of steel wire around them.

Any flaws in the steel were stretched out along the wire and therefore didn’t provide enough of a stress concentration to make the wire fail as a solid block would have.

Fiberglass or graphite fiber could serve the same function on an all plastic barrel.