This page covers the Ghost Recon Breakpoint Robot Arm Tattoo. This is a reward item during the Terminator Live Event and is given after reaching Tier 3 for the left arm and as a second reward at tier 17 for the right arm.
Robot Arm Tattoo
Robot Arm Tattoo Guide
To get this item simply play through the missions available during the Terminator Live Event. The Event missions are given to you by Rasa Aldwin in Erewhon. The missions usually involve collecting intel, hacking devices and killing rogue Terminators with you MK14.