18 September Associated Press - Army's Newest Stryker Vehicle Boasts More Firepower.

Soldiers at Fort Lewis have begun training on the Army's 10th and final version of the Stryker armored vehicle.

Five years in the making, the Mobile Gun System looks a lot like its predecessors but has a 105 mm cannon, and Army officials say it packs more power than other versions armed with a heavy machine gun, a grenade launcher or anti-tank missiles...

The MGS, as the Army calls the new vehicle, is designed to back up infantry with a gun that can blast through walls, knock out fortified sniper nests, stop other armored vehicles and clear streets of enemy fighters...
The 49,000-pound MGS is operated by a three-man crew: a driver, a gunner and a vehicle commander, said Thomas Crooks, the company's service leader at Fort Lewis. The gunner and commander track targets on computer screens inside their hatches in the turret.

The vehicle can carry up to 18 rounds, and the gun is loaded by an automated hydraulic handler. Its computerized fire-control system is virtually identical to the one in the M1 Abrams, the Army's main battle tank.

The MGS will carry four types of ammunition: a depleted-uranium armor-piercing round, a high-explosive anti-tank round, a high-explosive plastic round for blowing through walls and barricades, and a canister round filled with 2,300 tungsten ball bearings for firing on enemy fighters.

The MGS packs "exactly the same, if not a little more enhanced" firepower as the much heavier 70-ton Abrams tank, but is not as sturdy defensively, Cooper said...

The MGS also does not need as much logistical support as the Abrams, gets better gas mileage and is built on the same basic chassis as other Stryker vehicles.