Well
Patriot Ordnance Factory had one of their guns (P308FA) shoot 68000+ rounds without the barrel needing replacement or losing significant accuracy. This is due to the nitride heat-treated fluted barrel, heat sink barrel nut and gas piston system that POF uses. A HK417 or even an AK will be hard-pressed to deliver this kind of reliability.
Though of course, politics will come in and will dictate the purchase of a German-made rifle.