Just got notice that my Omega is in. I plan on running it on both my 6.8 (16") and my 5.56 (18") and bought mounts for both to make it easy to switch. Other than making sure I have the 7.62 cap on it when I shoot the 6.8
, what other considerations do I need to take into account? I hear about 'over-gassed' but I'm not really sure what affect that has on the rifle or how to do anything about it. Gun is a RRA LAR-15 ATH, mid length gas system; the 6.8 upper is also RRA, carbine-length. Do I need to think about a different buffer or gas block?