WTB: modified or Improved cylinder, 835

[cjordan]

Hey yall, Im looking for a modified or improved cylinder choke for a Mossberg 835. When I bought the gun it had a turkey choke with it, and thats all that came with it. I would like one of these chokes for polishing the barrel, due to everything I read says do not uses a turkey choke when cleaning the barrel. If you have anything laying around that you dont think you will use, could you please let me know? Thank you for your help and time.