If you do shorten this barrel there are a few things you need to know.

#1... The placement of the vertical posts under the rib will dictate where you cut the barrel. You must cut off the barrel at the front of a post on a VR barrel.

#2... The gas port will need to be opened up to allow more gas to vent in order to cycle the action.

#3... If you want chokes you will need to also pay to have the barrel rethreaded to accept screw in chokes. Otherwise you will have a straight cylinder bore.

#4... You will need to include the price of having the rib redrilled and tapped for a bead.

#5... it would probably be cheaper to just buy another barrel and you wouldn't be without your gun for how ever long it would take your gunsmith.