I picked up a NEF 12 ga. X 3" shotgun the other day. What I know about NEF products wouldn't fill a thimble.
Will a NEF rifle barrel drop in the same receiver or are there different receivers for shotguns and rifles?
I'm thinking(that oughta' scare ya'!), if all NEF bbls are interchangeable, I could start looking around for rifle barrels to use.