Modification of the striking mechanism for springs

This modification allows you to replace the standard rubber rings with springs. This will avoid problems with rubber bands breaking and increase power without having to print the main parts. The modification was made in Fusion 360; unfortunately, I don't have the time to add individual parts or full screenshots of the modification at this time. I found and added the STL files with the modification. I hope this makes things clearer. Part Е18_v3.stl is more durable and fits a short spring. All other parts of the modification are compatible with it.