Source for 14" M1S90 barrel?

I’m picking up my HK Import Benelli M1S90 w/ghost rings soon. I’m wanting to do an SBS either one of my 870s or the Benelli. Anybody have a source for a 14" ghost ring barrel, or should I just scrounge up a reg. barrel and have it cut and get another LPA front sight put on? I know the 870 would be easier/cheaper, but the Benelli Entry guns are soooo nice!