How about thinking outside the box ?
How about this: In the early 1970's, three of my friends had low-to-no funds, but wanted to hunt deer with their smoothbore scatterguns.
Soooo, since I had several sets of Remington 700 "take-off" issue open sights, from rifles that customers scoped & wanted the sights gone - I epoxied them to my friend's barrels.
They're still going strong.
Today, even WallyWorld or Dick's (and certainly Cabela's) carries sets of clamp-on, screw-on, and sweat-on (glue) sights in gold bead & fiber-optic made expressly for smooth & vent-ribbed shorguns.
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