Doctor Strange / Punisher: Magic Bullets is the name of a digital comic mini-series produced by Marvel in 2016. The comics were created for Marvel's Infinite Comics line, which were a line of digital-first comics that took advantage of scenes being able to be shown on a digital display rather than a physical page.
The series followed a single adventure in which Doctor Strange and the Punisher team up to stop an evil pseudo-sorcerer from killing those he did not like using demons summoned from a dimension-bridging portal.
The story takes place during a single day, and occurs in Doctor Strange's comics between Doctor Strange Annual (Vol. 2) #1 and Doctor Strange (Vol. 4) #11. In the Punisher's series it is between Punisher (Vol. 11) #13 and Punisher (Vol. 11) #14.
Each of the comics were re-published in a physical magazine format a month after their digital versions were released.