RBO wanted a nicer looking RZR Passenger Grab handle the had comfortable grips for our passenger. The result is RBO Ultimate Gun Rack. This mount will fit all Polaris RZR's built after 2012 that use the square mounting shaft. RBO designed the Ultimate Gun Rack with Lots of adjustability so you can change the gun mount locations to fit your specific rifle or shotgun. We also incorporated Pro TaperA(R) Hand Grips, we also machined in a 1/2" drive socket adapter into the end