WTT Mossberg 590 barrel that has been threaded for chokes for your standard barrel

[gibbygoo]

20" barrel was threaded by R&D custom and it comes with a tight .660 choke for Turkey or Coyote. It's threaded for external Remington chokes. The front sight is a snap on HIVIZ Fiber Optic.

I won't be hunting with this shotgun, so want to trade straight across for a regular 590 barrel with under 1000 rounds through it.