Thanks all for the input thus far. I am not dead set on the ACOG but I do love the optic, second choice might be their 42mm reflex but I do not care for the 6.5MOA dot which seems to the only option for it. If someone has a different but equal suggestion or thought I'm all ears.
If I go with the USG/standard it seems that my options for adding illumination/laser would be limited without adding all kinds of extra mounts for rails, or am I missing something?
I guess I should note that my goal is to end up with a rugged, ultra reliable & fast sighting system with at least two lighting options (f/o, tritium first choice, led last choice). A rugged, ultra reliable lighting system, and a rugged daylight laser that can also double as a non-lethal/distraction device. The deciding factors in order would be reliability, ruggedness, weight.
And no I'm not looking to play commando, I've just decided that I want one decent weapons system that I'm going to run until I croak. Ive done the M4's, AK's, FN/FAL, Glock's, HK's, Sig's, 9 vs 40 vs 45, etc, etc, etc, blah, blah, blah. After years of all that I fell in love with the 5.7 PDW/pistol combo and want to just simply by setting these up good and not messing around any more with the others. The rest of the toys are gone with a few exceptions that are more sentimental than anything else, so the 90 and 57 will be my primary home/vehicle defense weapons as well as my fun plinkers.
I am open to any input or ideas that you may have so use me as your "If could do it all over again" :x
(ETA, I will be doing the SBR on the 90)