Have seen several strings in this forum about the cost & mechanics of "printing" a gun, or at least mags. Might have missed it, but have not seen a discussion that this technology negates the whole idea of "gun control"... when the printers will be legal & eventually common. Of course, even before the 3D printer is perfected, anyone with a lathe can make a passable, single-use gun... And then use that to acquire a more effective unit... As if that was even necessary, given the millions of quality weapons already in circulation.