TargetTalk

i took apart c5 co2 pistol when putting it together I have an s spring left over which i cannot find in C5 pistol diagram does anyone know if it belongs to this pistol and were it goes.I found a russian post that has pictures of the S spring put i do not see this spring in parts list
https://popgun.ru/files/g/96/orig/17297556.jpg

i had a hard time uploading pics that is why i posted link above

by further investigation I found out that the s spring is a broken part of 1856.149.3 known as leg spring