WTB: Remington 870 Super-Mag Vent Rib Barrel 2 3/4 to 3 1/2"

[The_DevinG]

Looking for a Vent Rib Barrel for a Remington 870 Super-Mag. I want to be able to chamber all shell sizes from 2 3/4" to 3 1/2"
Any length is ok. I would prefer it in the standard flat black finish. If anyone has a barrel that has a bulge past 20" on the barrel that might work ok too, because I'm planning on having it shortened to 18 1/2" or 19". I know 3 1/2" is too big to use for HD but I might end up using this barrel for hunting also.