In 06-2011, the US Army placed a contract order for 100,000 M-4A1 Carbines. In 04-2012, the contract was awarded to Remington Defense. In 07-2012, Colt filed a protest with the U.S. Government Accountability Office (GAO). In 09-2012, GAO announced their ruling that allowed manufacturers to re-bid for the contract. In 10-2012, Colt filed a second protest with the GAO. Today, GAO announced their ruling and awarded the contract to FN USA.