INCREASE THE PERFORMANCE, ACCURACY AND EFFICIENCY OF YOUR BT� MARKER WITH RUFUS DAWG'S "WICKED BOLT SYSTEM"! The "WICKED BOLT" kit includes 1 new Bolt with O-Ring and 1 new powertube that fits all BT Markers. *Includes Full 1 Year Replacement Warranty on product for material and manufacturing defects! Venturi Bolt Design: Allows more even distribution of the Air Blast on the paintball. The result is a more consistent shot due to less deformation of the ball.Full Paintball Cradle:Full conical shape on the front of the bolt which "Cradles" the ball so it does not deform on contact.Flexible Rear Seal:Provides a full seal around the powertube without extra drag or friction.Guide Rails:The rails provide an outer track to guide the bolt inside the body. Less contact results in less friction and wear. Recessed Pockets:The recessed pockets on the outer shape are designed to hold paint and shell fragments from broken paintballs, keeping them from hurting performance.Delrin Material:Molded from Delrin, a strong self lubricating plastic.