Swiss Arms the spring rebuild with the Crasman staff

[labyukv]

Hi everyone,
Another rebuild - Swiss Arms TG1. The Top one - is a new spring from Crosman (stated as fits Swiss Arms).
Bottom one - the original, notice that at the end kind of inserted another spring, both ends are not broken! Is it just a design? With holow point pellet 8... grain is about 850 f/s. The top end of the "inserted spring on the bottom of the main spring had about 5mm of the broken spring