Ok, all encores are single shots. To change barrels, you take out two screws for the forend, you knock out the hinge pin, and take the barrel off and put on a new barrel, insert the hinge pin back in, and reattach the forearm with the two screws. You might need a different forarm for different rifle barrels depending on the contour, and you will definatley need a different one for muzzleloader or shotgun.