What is PRC-E6 (or E7, E8, etc.)?
PRC-E6 (or E7, E8, etc.) meaning in Military or Military Slang terminology / glossary / dictionary is:
(U.S.) A non-existent item that a new join to a unit may be sent to acquire and bring back, typically from an NCO of a particular grade (PRC is a common prefix in designations for radio or other communications equipment and is pronounced “prick”. The combination of this pronunciation plus the “E-” rating makes up the joke.)