Arm Cannon has these relationships to other tropes:

parents kids shares a parent with:
Artificial Limbs
Unusual Weapon Mounting
parent child
Artificial LimbsHook Hand
''Swiss Army Appendage
''Anatomy Arsenal
''Spider Limbs
''Super Senses
''Unusual User Interface
Unusual Weapon MountingLeg Cannon
''Shoulder Cannon
''Chest Blaster
''Backpack Cannon
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