Pro Mag Industries Drum Magazine for Smith and Wesson CSX Features The ProMag Drum Magazine is purpose built to fit Smith and Wesson CSX 9mm pistols delivering a 30 round capacity that far exceeds the pistol s factory magazine options. Its body is molded from a proprietary DuPont Zytel based polymer a material chosen for its strength to weight ratio and resistance to cracking under repeated loading and use. A blue steel upper magazine tower reinforces the critical feed lips and tower area the section of any high capacity magazine most prone to wear and stress. An injection molded magazine follower works with a heat treated stainless steel spring to maintain consistent feeding pressure from the first round to the thirtieth. Built and assembled in the USA this drum magazine reflects ProMag s long standing focus on domestic manufacturing for the shooting community. The polymer body stays lightweight compared to an all metal alternative keeping the pistol more manageable even with 30 rounds loaded. For CSX owners who want to extend range sessions without frequent reloads or who want a higher capacity option for home defense this drum offers a straightforward upgrade path. Finished in black polymer to match the factory look of the CSX the ProMag Drum Magazine is available for sale at GrabAGun. Pro Mag Industries Drum Magazine for Smith and Wesson CSX Specifications Manufacturer: Pro Mag Industries Model: Drum Magazine for Smith and Wesson CSX Caliber: 9mm Luger Capacity: 30 Rounds Color: Black Material: Polymer Compatible Hosts: Smith and Wesson CSX Available At: GrabAGun