The M121 bomb was a very large air dropped bomb used by the U.S. military during the Vietnam War.
M-121 is a state trunkline highway in West Michigan.
The M1064 mortar carrier is an American tracked, self-propelled artillery vehicle, consisting of the M121 mortar-a version of the M120 mortar- mounted on an M113 chassis.
The M121/A1 155mm Projectile was a chemical artillery shell designed for use by the U.S. army.
The Mauboussin M.120 was a trainer and touring aircraft built in France in the 1930s and again in the years following World War II.
Soltam Systems (סולתם מערכות) is an Israeli defense contractor located in Yokneam, Israel.