UTG
® 80mm Diameter Side Wheel Add-on for Making Finer Parallax Adjustments
 Compatible with Side AO ACCUSHOT ® Optics and Not Compatible with Bubble Leveler Side AO ACCUSHOT ® or Side AO BUGBUSTER ® Optics
 Aids in Finely Tuning Parallax Adjustments
 Aircraft Aluminum Construction with a Matte Black Anodize
 Laser Engraved Distance Markers in Yardage Increments
                     Compatible with Side AO ACCUSHOT ® Optics and Not Compatible with Bubble Leveler Side AO ACCUSHOT ® or Side AO BUGBUSTER ® Optics
 Aids in Finely Tuning Parallax Adjustments
 Aircraft Aluminum Construction with a Matte Black Anodize
 Laser Engraved Distance Markers in Yardage Increments
                        Will this fit OP3 scopes?                    
                    
                    
                            Answer:
                            No this will not fit. You need UTG part # OP3-SW080.
                        
                        
                    
                        What size allen screw does it take                    
                    
                    
                            Answer:
                            Leapers does not supply that specification.  Everything needed for the installation of the index wheel is included, including the Allen screw and wrench.
                        
                        
                    