Briley thinwall chokes in a Model 21 12 ga. are just fine if you want to make it a versatile gun for hunting and clays. I once owned a no. 1 engraved trap 21 with 30" barrels that had Briley thinwalss in it, and it was one of the best shooters I've ever owned. One of the finest late winter dove hunts I've ever had was with that gun. The 21 collector I sold it to could not have cared less about the choke tube installation. Should have kept that gun, but the $2,000 profit I made on it looked pretty good at the time.
This is a really nice piece at Steve Barnett's that meets your criteria, and is priced right about where these guns are now. Steve will bargain, but cash speaks the loudest:
https://stevebarnettfineguns.com/winches...nt-rib-12-gaugeJR
