I see there are new "status" g6r's. the advertised efficiency is increased from 2011 models? There is now a "mega volume chamber" as well getting over 2800 shots. So it has a larger volume chamber now and also greater efficiency? I know the trigger, asa, milling, bolt pin, oled board is new. Can someone clarify. I am asking since I owned a red/black 2011 g6r and am interested in the newer ones.