Glock 9MM New Style Mag Follower Does Not Fit G43. Cap-style fits only magazines factory-supplied w/ '4' '5' or '6' followers. Specifications for Glock 9MM New Style Mag Follower Not G43: Manufacturer: Glock Color: Black Gun Model: Glock 34 Glock 17L Glock 17 Glock 26 Glock 19 Gun Make: Glock Package Contents: Glock 9MM New Style Mag Follower Not G43 compatible What firearm models does the manufacturer say Glock 9MM New Style Mag Follower Not G43 is compatible with? The manufacturer suggests that Glock 9MM New Style Mag Follower Not G43 is compatible with Glock 19 Glock 26 Glock 17 Glock 17L Glock 34Glock GLSP01812-6: 9MM New Style Mag Follower Does Not Fit G43