Elevate your firearm's performance with the ProMag Industries DRM-A53 Drum Magazine, engineered for durability and reliability. Featuring a unique blend of advanced materials, this magazine promises seamless operation and long-lasting use, supported by a lifetime guarantee against defects. Drum housing constructed of a proprietary DuPont Zytel based polymer Magazine upper tower has full length steel internal insert stamped and welded like the factory magazine Injection molded magazine follower Magazine spring formed from heat treated stainless steel Made in USA Trust ProMag for unmatched quality and performance in every shot.