KSM1 Jabber

The KSM1 Jabber (officially KSM1 MBT within the Sironan Militia and M471 MBT across the UNSC) is a main battle tank primarily utilized by the Sironan Militia, though it has also seen limited service within the UNSC Marine Corps and UNSC Army and a handful have fallen into the hands of various Insurrectionist cells. Smaller and less powerfully armed but faster and with theoretically higher levels of protection than the, the KSM1 MBT line was developed by Kovac and Sons Motor Company to specifically face the perceived threats presented by the Covenant while remaining significantly cheaper than its counterpart to fit within the budgetary needs of the Militia.

These combined needs are seen with by looking at the companies involved with the development of the vehicle, all being smaller, local Sironan companies rather than the large, near-monopolistic companies associated with most UNSC vehicles, such as or, as well as the size of the tank and its main armament, being both smaller than the Scorpion and armed with a 75 mm gun, designed to lessen weight to afford for fast velocities while also providing effective penetration power by utilizing electrothermal-chemical propellant systems to allow for faster muzzle velocity than the Scorpion's larger,.

However, the vehicle performed well enough during the Human-Covenant War that the Sironan Militia took advantage of its increased budget to order an upgrade to the tank in the form of the KSM1A2 (M471A2) Jabber to gradually replace the older model starting in 2555, with the A2 featuring slightly thicker armor overall, an additional coaxial 25 mm M68 Gauss Cannon, and a larger turret. Some select tanks within this later line of Jabbers have also seen the trial integration of shielding technology, though all of these have been within the hands of the UNSC rather than the Sironan Militia.