Does ay manufacturer make a metal 15cm sFH 13/1barrel for Panda kit PH35035?

I have the Sd Kfz 135/1 kit # PH35035 from Panda and the barrel is split right down the middle. Does anyone make an aftermarket barrel that will fit this kit. They make barrels for the SiG and other vehicles but I can’t find one to fit this particular kit. Thanks in advance for any help you can give me.