KR valve spring.

In my manual for the KR there is a picture of a double valve spring arrangement.
Is this special for the KR cylinders or will they fit on my K cylinders?

If the double spring arrangement will work—I want them, but where can I buy them?

/Andreas

Closest thing is a S&W 1-1/4" "heavy" spring - long out of production. My favorite substitute is any good T120 spring, Kibblewhite, WebCam etc. You'll need the stool shown in the picture. A less expensive is a SBC spring, slightly different fit.