Pro Mag Industries Magazine for Glock 28 Features This ProMag magazine is purpose-built for the Glock 28 in .380 ACP extending standard capacity to 32 rounds for shooters who want more rounds on tap between reloads. The magazine body is molded from a proprietary DuPont Zytel based polymer a durable engineering-grade material chosen for its impact resistance and long service life. Inside a full length steel insert is stamped and welded in place much like the factory magazine construction reinforcing the feed lips and body against the stresses of repeated loading and firing. This combination of polymer body and steel reinforcement gives the magazine both light weight and lasting durability. Feeding reliability comes from an injection molded magazine follower that tracks smoothly through the body as rounds are stripped and chambered. The spring itself is made from heat treated chrome silicon wire a material selected for its resistance to fatigue over thousands of loading and unloading cycles. Finished in black polymer the magazine matches factory Glock 28 aesthetics while offering a meaningful capacity upgrade. Manufactured in the USA this ProMag magazine is a practical option for shooters who want a dependable extended magazine for their Glock 28. Pro Mag Industries Magazine for Glock 28 Specifications Manufacturer: Pro Mag Industries Model: Magazine for Glock 28 Caliber: .380 ACP Capacity: 32 Compatible Hosts: Glock 28 Color: Black Material: Polymer Available At: GrabAGun