I can build a zip gun out of anything, the meaning behind my post was that anyone with this type of a printer can make a Liberty gun, and that includes the barrel.
With a disposable untraceable gun its posible to use that to move on up gathering weapons from the enemy.
Its a WW2 gun air dropped to the French Resistance. many made by Guide Lamp USA.
2 bits of information that everyone needs to know, if the SHTF or the left achieves its goals -
a 1/4 inch steel pipe will “chamber” a .22
a 3/4 inch steel pipe will fit a 12 guage shell.
Break this glass only in extreme emergency, though.