Mounted heavy-caliber machine guns were often used as a defensive weapon for Mobile Infantry. Like the Morita Assault Rifle, these weapons seem to shun modern technologies in favor of the reliability and efficiency of 20th century ammunition and operating mechanisms. Due to their seemingly large caliber (likely 12.7mm/.50 or higher) and high rate of fire, these weapons would prove to be far more effective then the Mobile Infantry's standard issue Morita assault rifles in certain applications, though even these attributes did very little to stop a seemingly endless wave of warrior bugs. Four of these machine guns were installed in pairs at two of Whiskey Outpost's defensive towers on Planet P.