READY RIG RR-VU VEGA UPGRADEAdd On for Ready Rig GS with ProArms Adds Vertical Axis Stabilization Improved Shock Absorption and Stability Redistributes Weight to Legs and Core Rear Handgrip for Spotter Guidance ###split### The Ready Rig VEGA Upgrade is an add on for the Ready Rig GS with ProArms stabilizer. It attaches to the stabilizer and adds vertical axis stabilization to allow for improved balancing. The VEGA Upgrade screws onto the Ready Rig GS vest around the lower back