The Sig556 I was able to get some trigger time (friend's) with in the states seemed okay, but I would not consider 90 rounds to be a good judge of quality (Wasn't sure why it had a fixed A2 stock on it either, but whatever). Wasn't exactly impressed by it (maybe I'm just jaded), the fit and finish did not seem as tight and consistent as the SAN's I'm used to.
I could immediately tell the Sig Mini Red Dot Sight was of outstandingly poor quality. I think they are questionable enough on the Sig Mosquito's, let alone a centrefire rifle. Would much rather just save the $20 it adds to the gun (EDIT: The MSRP on the RDS is $199. I... wow... ouch).