Experience unmatched reliability with the ProMag Industries DRM-A49 Drum Magazine, crafted from high carbon steel and DuPont polymer for superior durability. This expertly engineered magazine combines traditional craftsmanship with modern technology, ensuring consistent performance in demanding conditions. With a focus on longevity, each product is built for resilience and precision. Drum housing constructed of a proprietary DuPont Zytel based polymer Magazine upper tower features a full length steel internal insert, stamped and welded Injection molded magazine follower for enhanced functionality Magazine spring made from heat-treated stainless steel for reliable feeding Backed by a lifetime warranty against manufacturer's defects Made in USA for quality assurance Upgrade your firearm's performance with the ProMag DRM-A49 - a robust solution designed for serious enthusiasts.