M114 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. History
The 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. Specifications
The 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. References

Biological weapon delivery systems
Submunitions
Military equipment introduced in the 1950s