The US Navy has awarded the Tomahawk missile composite capsule launching systems (C/CLS) contract to Raytheon.
Under the $25.9m agreement, the company will be responsible for the production and delivery of the systems, which allow Tomahawk Cruise missiles to be launched from submarines.
Raytheon Tomahawk senior programme director Roy Donelson said: "Submarine and surface-launched Tomahawk missiles have been employed in more than 2,000 combat missions worldwide.
"Raytheon and the US Navy are working together to give this proven missile even greater capability."
Integrated into nuclear-powered fast-attack submarines and nuclear-powered guided-missile submarines, the new C/CLS is capable of enabling all mechanical and environmental interfaces between the missile and the submarine missile tube.
Raytheon will start deliveries in September 2015.
The surface and submarine-launched precision strike standoff Tomahawk Block IV missile, which has a range of more than 1,000m, is primarily intended for long-range precision strike missions against high-value and heavily defended targets.
Together with the US Navy, Raytheon is working to improve the capability of the Tomahawk missile system.
In September, the navy successfully completed back-to-back flight trials of the cruise missile, in a bid to demonstrate its software enhancements.
The missile, which has been deployed in battle more than 2,000 times, is claimed to be a key weapon against integrated air defence systems and heavily secured high-value targets.