Armo of Poland make 4 types of barrels for the different Panther marks: One for Dragon, two for Italeri and one for Tamiya as the mantlet fittings are different on each kit as you can see if you go to:
http://www4.ocn.ne.jp/~msmodel7/page092.html
The barrels are the 5th pic down onwards.
I have several Armo barrels that I bought from an Aussie supplier and like them because usually they do not have separate muzzle brakes, particularly as the separate ones are often white metal or resin and require cleanup or such. I think the quality is equal to Jordio or Eduard, but others may not agree. The range is not that extensive at present but have suited me so far, and the price here in Australia is far less than that of ordering any of the others.