Pack contains four different reduced power magazine release springs identified as #1 (strongest) through #4 (lightest) and one factory strength magazine release spring for a total of five springs. Springs allow fine tuning of the magazine release which is essential for competition. Fits 1911 Government, Commander, Officer and Defender models.
Reduced power springs make it easier to work the magazine catch on a 1911 pistol.
The factory does not give a weight rating on the springs.
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