By Carmen FormanStaff writercforman@oklahoman.comSupporters of Oklahoma’s permitless carry law are challenging a petition seeking to repeal the measure that expanded residents’ gun rights.The Oklahoma Second Amendment Association on Friday filed a legal challenge to proposed State Question 809, which seeks to repeal the law that allows most Oklahomans to carry a firearm without training or a permit.The group is alleging supporters of SQ 809 missed the window to repeal the law when they failed to collect enough signatures for a separate petition last year.Rep.Read more on NewsOK.com