Total stainless steel recoil spring system solves cycling problems caused by recoil system rust and corrosion; completely impervious to salt water, humidity and rain. Precision machined to exacting tolerances; reliably cycles all loads, including magnum and light target loads. Provides an increase in the cyclic rate that lets you get those second and third shots off quickly. Operates dry; requires no lubes or oils that can harden and slow down action in cold weather. Installs easily without modifications to gun.