Maximize your firepower at an affordable price with the ProMag® 9mm 50-Round Drum Magazine for Glock® 48, 43X pistols from GunMag Warehouse. This affordable high-capacity drum mag features a durable, steel-lined DuPont™ Zytel® polymer body for lasting performance and durability. Plus, this aftermarket magazine features a heat-treated chrome silicon wire spring, designed to eliminate binding and deliver smooth operation with the injection-molded polymer follower for more reliable feeding performance. Backed by ProMag’s legendary lifetime warranty for added reliability. Made in USA.