A couple of years,ago I picked up one in 22 mag over 3" 20 gauge. Somewhere along the line it had a receiver peep sight mounted on it.
I also found that Winchester makes a low velocity 22 mag ammo. I now have a combo for squirrel with the low velocity ammo or groundhogs with 22 mag.
I hope to have choke tubes installed in the 20 gauge barrel so I can also shoot slugs for deer.