M310 smooth-bore high-velocity cannon

The M310 smooth-bore high-velocity cannons, or simply M310 guns, are two 120mm guns mounted on the M850 "Grizzly" Main Battle Tank. The cannons are jokingly referred to as the "main funs" by the crews of the Grizzly.

Overview
The M310 guns fire high-explosive anti-tank (HEAT) shells at very high velocity; the kinetic force adds to the explosive firepower of the shell. The weapon can be loaded with S1 canister shells, which produce a large, high-volume blast of explosive fragments, greatly increasing the weapon's lethality against infantry. The cannons are capable of destroying the shields of an opponent and piercing their hull in a single strike. The two cannons have a high rate of fire through the use of an innovative autoloading system that uses the recoil of one cannon to decrease the loading time of the other.

List of appearances

 * Halo Wars
 * Halo: Spartan Assault
 * Halo: Spartan Strike
 * Halo Wars 2