I have a 12ga. Winchester 1300 defender, and I have been in the market for a new/used 18"in. barrel for a while now. I've found quite a few model 1200 barrels but no 1300's. Will a model 1200 fit my 1300 if the specs are the same (i.e. 12ga., 5 shot, 2 3/4in 3in)?