They ARE the H&R factory stocks, Brownell's sells a lot of their parts, I just ordered all of the ejector parts for an extractor to ejector conversion. Sorry, no thumbholes, the Boyd's are only available on complete rifles and thru H&R, although BC Pawn sells some on Ebay too, his may very well be seconds or come without pads, several members were very dissatisfied with his stocks.
Tim