Knights KP1 Utility gun is the only gun that can be transformed from a muzzleloader to a centerfire rifle in the blink of an eye. The Knight KP1 Whitetail series starts as a .50 caliber muzzleloader that accomodates a 209 primer ignition system. Additional features include fully adjustable metallic fiber optic sights, removable and non adjustable trigger, length of pull of 14 1/2", sling swivel studs, 1:28" twist rate and recoil pad. Requires Form 4473 for purchase.