I mean obviously 3D printing and CNC fabricators like #Xometry obviously ban #GunParts as per ToS and some 3D printer manufacturer and CAD software will likely install some #Blacklist shit like we've seen with #Photoshop locking up when one tries to open or edit a currency bill using #OMRON-rings or having #EURion constellations on them.

But effectively it's impossible to ban guns without banning tools, metal, wood and plastics...

https://www.youtube.com/watch?v=sIhGCRIQnCA