MTW not switching between semi and full-auto
MTWs manufactured after October 1, 2021 may be equipped with the new black Spartan Electronics board with an optical select-fire sensor. This sensor works by detecting a dark or light surface on the selector barrel. Detecting a light surface will set the MTW to semi-auto and detecting a dark surface will set the MTW to full-auto.
A sticker or paint can be used to ensure that the two surfaces are detected correctly by the sensor.
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