What do I Need to Upgrade to AR4-MK3?

To upgrade your AR4-MK1 or MK2 to the MK3 version, you need two core components:

J6 Housing and Gripper Mount
(This part adapts your existing arm to the new MK3 assembly)
Complete AR4-MK3 stepper motor, driver & power supply package
(Order this factory-direct package from StepperOnline for guaranteed compatibility)

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