This magazine extension increases the capacity of the 33 round magazine by 17, for a grand total of 50 rounds. This part utilizes multiple technologies in Additive Manufacturing. Due to this, part design may vary slightly and small imperfections and color of the body may be different. This is the magazine extension only . A CP33 Magazine is required for installation. View Installation Instructions Video PLEASE NOTE : Certain cities, states, and counties restrict firearm magazines sales. KelTec will not process shipments to places where they are prohibited by law. A list of states and municipalities restricting firearm magazine sales is available here .