The Emirate is also reportedly interested in buying military hardware including night vision goggles and missile launching equipment.
The US Defence Security Cooperation Agency said the sale would contribute to the country's security by improving the security conditions of its ally Qatar, which it said represents an important force in the political and economic progress of the Middle East. It also said the accord would help protect important oil rigs.
Military relations between the United States and Qatar are consolidated and the two countries previously signed a defence cooperation accord in 1991. Qatar hosts a US Air Force base.