I inhereted a model 182, front sight was removed for some reason. I order one from Ruger, they sent a single blade one that does not go pass the flash supressor threads. I believe the original front sight was a winged one and attaches half way down the barrel, that is where the retention pin notch is located. I e-mailed Ruger and they stated that kind of sight is not made anymore, they recommended Brownells or Midway, no dice. Any suggestions.