On September 12, 1941, the second prototype light rifle designed by the team was complete and ready for submission but for two problems that had yet to be resolved. Williams was asked to help the others sort out the problems, and collectively solutions were found that allowed the prototype to be transported and submitted to the Ordnance Department by the deadline. The Ordnance trials were completed and the Winchester light rifle was adopted as the Carbine, Caliber .30, M1 Carbine on September 30, 1941. Williams had been unable to complete his own light rifle prototype in time for the trials. The prototype by Williams was a downsized version of his G30R design. Photographs of this carbine are retained by the Springfield Armory Museum and the Cody Firearms Museum Buffalo Bill Historical Center.