Ar-15/M4 Enhanced Hammer Spring - Enhanced Hammer Spring
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Aug 26, 2026
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Replacement AR-15 M4 Enhanced Hammer Spring. The Hammer Spring is made of 17-7 PH Stainless Steel that has been heat treated and stress relieved, passivated, and precision tolerances. The springs are cryogenic processed and moly plated. Mfg: Sprinco Usa
