They’re unicorns these days. Were never cheap, even when they were still being made. Now they’re like gold.
My solution is to buy the Williams WGOS designed to replace the TC barrel sight, then replace the blade with an aperture blade, with or without fiber optics. Don’t care for the FO front included, and have had a couple that weren’t good fits in the dovetail, so I replace them with a Skinner blade and paint it orange.
The barrel-mounted peep is plenty accurate, but perhaps not quite so fast as one closer to your eye.
