Perazzi flat rib barrel that is a shootable barrel that has been lightened up to shoot full length sub gauge tubes in 20/28/.410. Serial number on the barrel is #97119 but the original barrel serial number is 113972. This is an SC3 barrel that was originally 31.5 inches. Something happened to the end of the barrel and Briley made it a 28 1/2 barrel and threaded it with their Series 2 thin wall chokes. Again this is a shootable 12 gauge barrel NOT a Carrier barrel. Barrel with no tubes installed weighs 1.420kg Barrel with tubes installed weighs 1.745kg Barrel specs: 28 1/2 inch 11x11 flat rib .732 bore Series 2 Briley Thinwall chokes, comes with extended Skeet/Skeet 20 gauge tubes comes with chokes .003 and .006 28 gauge tubes comes with chokes Skt/Skt .410 ga tubes comes with cheeks: .006/.006 Complete setup comes with a Negrini case that fits gun and 2 barrels up to 33 inches in length Also comes with all tools/wrenches to install tubes $3799 www.lombardosportingarms.com