Perazzi 31.5 inch 4mm step rib barrel that is Brand NEW and UNFIRED. Serial number is 91XXX but unfired Barrel Specs: 31.5 inch 4mm step rib 18.4 bore Stamped 1.700kg but on my scale weighs 1.685kg Comes with a full set of factory flush chokes in 0/0/2/4/6/8/10 These barrel today are over $6800 and this one is NEW $4999 www.lombardosportingarms.com