Kit SS-311 provides the highest quality action-tuning springs by Wolff to help the model 311 shotgun “hang” open for reloading, gives less cocking effort. Contains (2) factory standard hammer springs, (1) 15% RP sear spring, (2) 30% RP hammer springs, and (1) 15% RP top lever spring.
Big Book Catalog, Issue:66, Page:197
Cowboy Action, Issue:03, Page:006
SPECS: RP = Reduced Power.