hoplophobe

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

hoplophobe (plural hoplophobes)

1. (derogatory, rare) Someone who has an irrational fear of guns.
   • 1977: John Wood Campbell [ed.], Analog Science Fiction/Science Fact, volume 83, issue 4, page 171 (Davis Publications)

     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.