Peter, yes Sir, this model uses Flush fit Optima Bore HP choke tubes that have an 80mm double forcing cone. Included are Full, Improved Mod, Modified, Improved Cyl, and Cylinder choke tubes.

yes it has flush mount chokes 5 chokes are included (F,IM,M,IC,C) extended chokes are available from trulock and others https://trulockchokes.com/?target=choke_results&category_id=11&filter%5Battribute%5D%5B7%5D%5B112%5D=112&filter%5Battribute%5D%5B4%5D%5B257%5D=257
see *** Beretta 686 Silver Pigeon I, Over/Under, 12Ga, 28" Barrels, Floral Engraving, Silver Receiver, Oil Finished Wood Stock,***** 5 Choke Tubes - F,IM,M,IC,C, Optima Choke HP Chokes, 2Rd J686FJ8