This is a full scale mortar with a 2 1/4 inch bore. Made from solid iron with a steel barrel liner. I bought this from Dixie Gun Works for around $700 wanting a fun woodworking project but never got around to it. I'm asking $450 shipped located in MT. And shipping is a lot on this sucker so I'm firm on that price. No FFL or anything is needed for this. 556 round for scale.