M2 (machine gun)/Definition

This article contains just a definition and optionally other subpages (such as a list of related articles), but no metadata. Create the metadata page if you want to expand this into a full article.

M2 (machine gun) [r]: U.S. and worldwide heavy machine gun, firing .50 (12.7mm) caliber ammunition used in aircraft, and by ground troops using vehicle or tripod mounts