Enjoy the sound of raw freedom with the Promag® Sig Sauer® P365/P365XL 9MM 50-Round Drum Magazine. This reliable drum mag features a durable, steel-lined DuPont™ Zytel® polymer body for lasting durability and impact resistance. Plus, a heat-treated chrome silicone wire internal spring eliminates binding, ensuring the injection-molded polymer follower operates flawlessly for reliable feeding. Made in USA.