| (subclass HeavyMachineGun AutomaticGun) | MilitaryDevices.kif 450-450 | Heavy machine gun is a subclass of automatic gun |
| (subclass ChainGun HeavyMachineGun) | MilitaryDevices.kif 326-326 | Chain gun is a subclass of heavy machine gun |
| (subclass M2Browning HeavyMachineGun) | MilitaryDevices.kif 467-467 | M2 browning is a subclass of heavy machine gun |
| (subclass XM218 HeavyMachineGun) | MilitaryDevices.kif 514-514 | XM218 is a subclass of heavy machine gun |
| (subclass M3M HeavyMachineGun) | MilitaryDevices.kif 548-548 | M3M is a subclass of heavy machine gun |
| (subclass GrenadeLauncher HeavyMachineGun) | MilitaryDevices.kif 591-591 | Grenade launcher is a subclass of heavy machine gun |
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