ULTRA-LIGHT SS VALVE SPRING for 13XX
This ultra-light valve spring is made of stainless steel. It's 1" long with closed ends ground flat for smooth even compression. It's a perfect fit for Crosman 1377C, 1322C, P1377, P1322, PC77 and 2289G Backpacker.
The second photo shows a standard 13XX spring at the top compared to this ultra-light spring at the bottom.