Appears you are correct. Upon further looking, it appears Palmetto ( having acquired the rights to H&R from JJE Capital Holdings after the Remington / Freedom Group bankruptcy dispersal sale ) has done a special retro run of new H&R logo'd receivers with USGI parts for a 60 gun limited run.
However, some of the original H&R M-14 receivers were apparently surplused out at some point - as my former boss had an National Match M1A style that he used in NRA HighPower competition that had been built with an H&R receiver. So, there are some out there.