I think Busta is right about the sight being in the FAQs, it rings a bell anyway, seem to remember putting a link to his thread on it, but the retail parts page won't open for some reason, it was made on the old software, and it's not working, I'll have to get Matt to fix it and check on the current part number for the Williams WGOS sight, that's all H&R uses now as far as I know.
Tim