The SIG SAUER MCX has been on the market for only about a year, and yet it has already found its way into the hands of the most elite police force in the United Kingdom. Pictures from the UK following the Paris terrorist attacks last week show the new counter terrorism unit sporting what appear to be nine-inch MCX rifles with MP5 style collapsible stocks. It looks to me like they’re chambered in 5.56 NATO, but personally I’d prefer a 300 BLK setup in that situation. Also a silencer. I’ll just put that on the counter-terrorism wish list.