SOLD! I have a brand new +3 Nordic Components mag tube extension. I just bought a Supernova Tactical and this +3 sticks out a little to far past the muzzle for me. Gun was never fired with extension installed. $50 shipped to anywhere in the continental 48. Paypal preferred for payment please. I have the threaded nut, cap, tube, and spring as well as original packaging and paperwork. This will fit all nova and supernova shotguns 12 gauge. ITEM HAS BEEN SOLD!