As far as cutting edge technology goes, there is no holding back. Like they say, it is not a question of if, but when. Here is an excerpt about 3D printers from the fictionalized Elusive Suspicions, published in 2015, a little bit ahead of time:

“Citizens replenished the town’s arsenal with the aid of a fully functional 3D printer. Though the machines were not new, they could easily handle modern extrusion, sintering, powder bed, laminated technologies and more. Laser-guided automatic weapons and neutron grenades, favorites with the townies of Maplefield, were created on demand with the 3D printer.”

The future is already here again. Funny how time flies.