M114 bomb[Image:M114 bomblet.jpg|thumb|right|The M114 bomb resembled a pipe bomb]The M114 bomb was a four-pound U.S. anti-personnel bomb and biological cluster bomb sub-munition. The M114 was used in the M33 [cluster bomb].HistoryThe M114 was a sub-munition for the M33 cluster bomb, as such, it was the first standardized U.S. biological weapon in 1952. The M114 was an improved version of a British World War II-era bomblet that was designed to disperse anthrax.SpecificationsThe M114 was similar to a pipe bomb: it had a tube with a diameter of. 108 M114s were clustered into the M33 cluster bomb; each had its own detonator and was ejected from the M33 while the bomb was still aloft. Each M114 held 320 milliliters of Brucella suis.