I went on the same fruitless search a couple of years ago. Ended up with a Williams receiver sight, got the version with knurled adjustment knobs. Note that it comes in two versions, one for a high front sight. I went with the one for a lower front sight, but my front sight was still too low.
For front sight used Williams shorty ramp. You then have a few zillion options for the front sight blade. I went with an Ashley partridge front sight. I'm extremely pleased with the end result.