Factory Remington 870 Express Magnum barrel for 2 3/4 or 3 inch shells. This barrel is 18" long and has screw in choke tube. It comes with one tube that extend the barrel length approximtely 1 1/2 inches. Basically the choke tube screws into the barrel and sticks out the end.
The barrel is also parkarized. It has a bead front sight on a raised base. Not sure what they actually call this type of sight.
Barrel is like new in 99%+ condition.