So, Sig (the non-American one) has decided that they wanted to modernize the 55X Series guns. My only question is why the fuck would you do that, they have never had a major military contract for them, the contracts that they did get were for LE agencies (and that was some time ago), there are numerous options that are just flat out better. They've added so much MCX (and by extension, AR) DNA that you're just flat out better off buying an MCX (or better yet, an AR). The only conceivable "feature" (if you can even call it that) that either an AR or MCX lacks compared to this is the ability to use 550 series mags, not that you would ever want to. This is like Beretta bringing back the AR-70