At the heart of the CP33 is its 33 round magazine. Made possible by its "quad stack" design, the CP33 magazine is made of a translucent polymer that allows the user to check if the rounds are seated properly. Cutouts on both sides of the magazine accommodate for slight adjustments. 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 .