Glock Magazine Catch Spring
When the magazine catch is changed, the Glock magazine catch spring should also be changed. Except for the G21SF Ambi, all models fit the magazine Catch Spring.
Replacement for Glock Mag Spring Catch 101
When disassembling and maintaining your Glock, two more tools are required in addition to the “Glock Armorer Tool”. These tools are a 4.5mm flat screwdriver and a pair of pliers with a narrow nose. In order to prevent the screwdriver blade from scratching the polymer within the mag well, I also advise you to wrap it with some high-tack masking tape. To remove the spring from the frame, just push it over with the flat head screwdriver. The strain is eased by this.