Mossberg 835 Ulti-Mag Tactical Turkey

It's in great condition and comes with the original choke plus a Trulock choke tube. It does not come with the red dot though, I'll keep that. It's a 3 1/2" magnum with a 20" barrel. It has a removable shell holder and cheekpiece. I'd be willing to work out a trade for a Glock 21.