Glock 21 45ACP • Capacity: 13 Round, Gen 4 • Manufacturer: Glock

This magazine fits the Glock 21 and 41 and will also function in a Glock 30, but will not sit flush with the bottom of the mag well. (These mags do not have the metal tab required for the SF model.)

Often overlooked, the magazine is one of the most critical components of a pistol. The GLOCK precision-made, stagger-column, high-capacity device is designed to reliably feed all ammunition types. Lightweight and strong, with a polymer shell enclosing a metal liner, this easy to disassemble magazine insert is engineered to be a strong and secure unit for years of outstanding performance.