hoplophobe

Etymology

First attested in 1977: hoplo- (“weapon, arms”) + -phobe (“one who fears”).

noun

Someone who has an irrational fear of guns.“To return to guns, one of the most avid hoplophobe senators issued a list of nations which did not lose too many of its citizens through villainous saltpeter. England featured, and so did other lands like Japan, where murder is rare except with cold steel.”