These KCI USA's Glock pattern magazines are constructed with a hardened steel insert that are encased in polymer. The polymer molding helps to protect the magazine body from damage and deformation from regular use.
KCI .40 50rd Gen 2 Drum Magazine
Weight - 0.3lbs
Compatibility - Glock 22 / 23 / 24 / 27 / 35
Caliber - .40 S&W
Capacity - 50 Rounds
Body Material - Hardened Steel / Polymer
Spring Material - High Carbon Steel