Interchangeable Weaponry

Interchangeable Weaponry is a system when a robot could be modified between battles, allowing the team to change their weapons depending on the opponent. The rules of the show allowed for this, as long as;
 * The weapons still conformed to the weight, height and width restrictions.
 * The weapons were offensive additions rather than defensive additions
 * The team declared all the weapons they could use before the tournament.

The first robot to use interchangeable weaponry was Shogun, which had side spikes which were interchangeable with spikes of different sizes.

Advantages and Disadvantages
Advantages
 * Interchangeable weaponry gives a robot a wider range of attacking options and tactics that can be used.
 * Interchangeable weaponry allows the robot to be modified depending on the opponent.
 * If one weapon proved ineffective, it can be replaced with another. In Series 4, the X-Terminator team found their axe weapon was not damaging enough, so they changed it to the scoop flipper, which helped them win their Heat Final.

Disadvantages
 * Weapons that did not conform to the rules were not allowed to be used. Team Tornado were not allowed to use their anti-spinner weapon, and their anti-crusher frame was banned after Extreme 2, because they were deemed defensive additions.
 * Different interchangeable weapons will have different disadvantages. For example, the spike addition to X-Terminator prevented them from self righting, a problem they could have avoided by not using it.
 * Buying and/or building multiple weapons for a robot is more costly and time-consuming.

List of Robots with Interchangeable Weapons
Robots are listed alphabetically. Robots that aren't heavyweight are listed with a green background.