Methods are provided for manufacturing a shell assembly for an electrical connector. First and second shells of a shell assembly may be formed from metal sheets via a stamping process. The stamping process may produce a number of first shells attached to a section of metal sheet remaining after the stamping process—a guide rail—with the front end opening of the first shell being oriented at 90 degrees relative to the guide rail. A second shell may be formed and severed from a metal sheet as a result of the stamping process. One end of the first shells may be exposed after the stamping process such that the second shells may be assembled over the exposed end of the first shells to form a shell assembly. Additional operations can be performed on the shell assembly.