Glock .40S&W 22 Round Magazine 9mm 40 extended mag encases a

40 extended mag encases a toughened and hardened steel insert in Polymer 2

40 semi-auto pistols

Viewing ports for visual confirmation of loaded rounds

The Glock 23  magazine spring is made from selected and expertly heat treated steels

Glock .40S&W 22 Round Magazine 9mm 40 extended mag encases aGlock 22 round magazine 40 S&W is a composite steel and polymer fabrication. The Glock 40 caliber extended magazine is the Happy Stick for 40 S& W fans. This is the largest capacity magazine made for Glock chambered in caliber . 40S&W. The magazine holds 22 rounds. The Glock . 40 extended mag encases a toughened and hardened steel insert in Polymer 2. As a result, this polymer makes the Glock Magazine incredibly durable. Glock 22 round magazine 40 S&W