Perhaps not so much hype as some may think.
At SHOT Show 2012, there was a company offering 3D printing of metal parts. Admittedly there was some processing required after the part was printed, but that processing was not particularly complex compared to operating a mill or lathe. The process, at least at the time I spoke with them, wasn't capable of equalling heat-treated steel for strength, but the parts are durable enough to stand up to the rigors required of many firearm parts.
Even plastic printed parts can be surprisingly durable if properly designed. If no one else does, firearm world, at least, should understand by now that properly designed plastic firearm parts can stand up to a surprising amount of use.