If this technology is perfected the possibilities of integrating a firearm into every day items is limitless. How about a 40 rd semi-auto disguised as a laptop. Or a 4 shot cell phone. Not to mention the problem of having ‘accessories’ match your outfit for the day are gone; just put a different color in the printer...
3D printing has ramifications beyond firearms. In theory there are thousands of products that we currently buy which could be “printed” at home and assembled.
Reminds me of the James Bond film, “Man with a Golden Gun” where it was made from a cigarette case, light, pen and cufflink.