Mike here is one a guy I know had one also he has a Timmely All Stell trigger but not sure if he will seperate it from the gun or not im sure it was a release since that is what he always shot back then.
He also had some more 1100 barrels and parts for sale his email is in his post below if interested.
I have a Swab's release for a 1100. Mechanically it is very good BUT It has a scuff mark on the trigger guard. Maybe one of those gunrack nightmares everyone was talking about? I would like 150.00 and i will ship Priority mail. Thanks Barry