Provides Positive Operation With Extra-Power & Reduced Power Loads
High-carbon steel springs help you tune the gun for dependable cycling and performance. High tensile strength ensures long service life. Use Extra Power recoil spring for heavy loads; Reduced Power for light loads. Recoil springs are available in +25% extra power and -25% reduced power for either 12 or 20 gauge models. Extra power improves functioning. Reduced power for use with light loads only.
Big Book Catalog, Issue:70, Page:200
SPECS: High-carbon spring steel. Recoil spring fits 12 and 20 gauge Benelli M1 Super 90, M2, Cordoba, Montefeltro and SBE shotguns.