Colt has entered in several US contracts with mixed results. For example, Colt had an entry in the Advanced Combat Rifle (ACR) program of the 1980s, but along with other contestants failed to replace the M16A2. Colt and many other makers entered the US trials for a new pistol in the 1980s, though the Beretta entry would win and become the M9 Pistol. The Colt OHWS handgun was beaten by H&K for what became the MK23 SOCOM, it was lighter than the H&K entry but lost in performance. Colt did not get to compete for the XM8 since it was not an open competition. Colt is a likely entrant in any competition for a new US service rifle. Current M16 rifles have been made primarily by FN USA since 1988. However, Colt remained the sole source for M4 carbines for the US military. Under their license agreement with Colt, the US military could not legally award second-source production contracts for the M4 until July 1, 2009.