The XM25 autocannon is neat. Absolutely nobody denies this. It's also pretty useless, because any insurgent who engages security forces in a conventional gun battle is going to die. Nine times out of ten, they're dead; if by airstrike or just being outflanked and outgunned.
They know this, which is why for the last nine years, the weapon of choice used by the other side has been the IED or the suicide bomb; where high tech weapons like the XM25 are rendered entirely useless. While it's nice to see the Economist running an advertisement for Alliant Techsystems in their magazine, the XM25 will actually do very little to win CI wars.