New Glock factory 22, 24, 24C and 35 15 round .40 S&W magazine GLOCK-MF22015. This is the new Glock Generation 4 magazine with the notch on both sides of the magazine. The magazines will work with either the right or or left handed magazine release. The Glock 22 magazine can be used as an extended magazine in the Glock 23 and Glock 27. Check out the XGrip Adapter if you want to use them as an extend magazine. The XGrip Adapter will fill the space making a grip instead of just having the magazine stick out. They have a stiff metal tube encased in the proven Glock high-tech polymer. This resists deformation – even when dropped from great height or exposed to extreme environment conditions.