Neat looking rifle. That article needs some proof reading though. They seem to be confusing the HK416 and 417 at one point, as the 417 never fired the 5.56 cartridge as they state. After this they go on to say the 416 fires and even smaller cartridge to that. Obviously the 416 and 417 have always fired the 5.56x45 and 7.62x51 respectively and this new rifle is a direvitive of the latter.