In the course of finishing up my Legacies 40k skirmish campaign packet last week I drew a boltgun to use as filler art, though it was eventually cut for space. I traced over and colored from an unattributed drawing that’s been kicking around the web forever, in addition to the boltgun being Games Workshop’s design, so I can’t take a ton of credit. But there doesn’t seem to be much 40k vector art around so perhaps others will find this useful.
The boltgun design is copyright Games Workshop, used here without permission, no challenge to status intended, all rights reserved to their respective owners.