It took the jury less than a day to find a 33-year-old man guilty of dealing fentanyl in Washington, D.C. and possession of firearms.

The 3D-printed gun movement has survived the downfall of its charismatic founder, a major defeat at the Supreme Court, and involvement in one of the most talked-about crimes of last year.

Why, in a world of micro nines and omnipresent striker-fired polymer pistols, does the revolver seem to be enjoying a mini Renaissance?