Are they even still being made? My understanding was that they were discontinued.
The last H&R/NEF single shot shotguns & rifles were made by Remington (who cut quality & jacked prices after buying out Marlin/H&R) and have been discontinued for a year or so now. Sad to see, but the storied brand & all the value-oriented guns associated with it are gone for good now it seems. AFAIK, the Chinese-made 'Pardner' pump shotguns are still being imported though.
Unlike the rifles, H&R's shotguns kept the automatic ejection design. I'm not sure about any other factors, but I would guess H&R stopped doing rifle ejectors for cost reasons; towards the end of production in Gardner, MA they stopped doing case hardening on the shotgun receivers as well, with Remington continuing the trend. Additionally, I remember many folks complaining of sporadic ejection problems some years ago with certain calibers in H&R/NEF rifles, so that could have factored in too...
There aren't many single shot shotguns left now, and none are domestically produced that I know of. There are some extractor-only guns (like the $99 'Hatfield' line at Wal Mart) being imported from Turkey, the Pointer line from Legacy Sports (also made in Turkey but featuring an ejector, transfer bar, and selectable manual safety), and the Rossi line made by Taurus in Brazil. The latter guns are similar to the Pointers, and have some nice features, but in my opinion their metallurgy/durability are rather suspect. Additionally, there may still be some Russian IZH/Baikal shotguns around, and these feature a neat selector switch allowing for either ejection or extraction of shells.
It would be nice to see another American-built single shot offered for a reasonable price, but I don't know if we'll see it. I think something like Topper Deluxe Classic would have enough upgraded features & still be affordable to make and sell, but who knows if there is enough market for it with all the inexpensive repeaters out there now...
~ SH ~