Day & Zimmermann plays a vital role in the defense sector by manufacturing, storing and demilitarizing a wide variety of ammunition products and providing related services to customers in the U.S. government and approved foreign countries.

Our extensive munitions experience dates back to the design, construction and operation of the Iowa Army Ammunition Plant in 1940 -- a contract we maintain to this day through our American Ordnance unit. With a diverse portfolio of production facilities and complementary capabilities that include Load, Assemble, Pack (LAP) and production line engineering, we get the job done safely and with integrity.