The system -- in use by the Army since 2008 -- provides a passive warning of a missile approach when used with BAE Systems' AN/AAR-57 CMWS. The warning cues the ATIRCM jam head to the missile's location and an energy beam is emitted to defeat the missile seeker.
Other terms of the contract were not disclosed.
BAE also announced it has completed initial deliveries of its Common Infrared Countermeasure systems to support contractor-led testing activities, for which it received a $38 million demonstration phase award last year.
"We fully expect that the upcoming CIRCM tests will verify that our decades of experience with survivability technology have resulted in the best next-generation missile protection for Army aviators," said Bill Staib, director of Threat Management Solutions at BAE Systems.
"While innovating for the future, we are also protecting our soldiers today with ATIRCM, which has surpassed all reliability performance objectives and provided 100 percent operational availability."
The Army opened the CIRCM competition in 2009 to develop and install the missile jammer on thousands of U.S. military helicopters.
Notable deaths of 2014 [PHOTOS]
New GenDyn mission computers for Navy F/A-18s