"Firearms" is a descriptor in the National Library of Medicine's controlled vocabulary thesaurus, MeSH (Medical Subject Headings). Descriptors are arranged in a hierarchical structure, which enables searching at various levels of specificity.
MeSH information
Small-arms weapons, including handguns, pistols, revolvers, rifles, shotguns, etc.

This graph shows the total number of publications written about "Firearms" by people in this website by year, and whether "Firearms" was a major or minor topic of these publications.
Bar chart showing 625 publications over 23 distinct years, with a maximum of 107 publications in 2017
To see the data from this visualization as text, click here.