ahahahahhaha! MC verses Death, what a match.
i studied the writing on the Battle Rifle: "Kaliber 9.65mm" Kaliber is German for caliber. So this looks like H&K is still making guns in the future. 9.56mm is a made up round, but just as a guess i think it would have the stopping power of 5.56 and the accuracy of 9mm.
halo round up part 2