M13B = SIG-Sauer MCX VIRTUS (added with Season 1) Chimera = Honey Badger/SIG-Sauer MCX hybrid (added with Season 1 Reloaded)

The Chimera is a curious case in Call Of Duty: Modern Warfare 3, while it has the expected damage output of an assault rifle, its close-range optimisation is something more akin to an SMG. Whilst there are even more powerful options out there, the Chimera remains as one of the best assault rifles in Modern Warfare 3.

Call of Duty: Black Ops III - Zombies Chronicles is available now on PS4!", Xbox One, and Steam.

You may be desperate to play Call of Duty Black Ops 4, but if you haven't played the last installment in the shooter franchise you can now pick up Black Ops 3 for free on PlayStation 4. If you're a PS Plus subscriber, you can download the game as one of the PS Plus free games from today.