Glock Magazine Spring should be replaced when magazine reliability is critical or when original factory springs have lost their tension. The Glock Shop carries springs for all Glock magazines.
Glock Magazine Spring Options List
The drop-down options list should cover most online magazine spring ordering requirements. If you are unsure please put a call into the shop so we can sort out any potential problem. 011 440 8755
Pictured below are the three most common magazine springs for 9mm/40 Smith Glocks. The can be identified either by which magazine they were removed from or counting the specific coils. Coil counting can be a subjective exercise.