The replacement AR-15 M4 Enhanced hammer spring is engineered for superior performance and durability, crafted from high-grade 17-7 PH stainless steel. This advanced material undergoes meticulous heat treatment and stress relief processes to ensure optimal resilience and longevity. Each spring is passivated to enhance corrosion resistance, maintaining its integrity in various environmental conditions. Precision manufacturing ensures exact tolerances, providing consistent and reliable operation. Further enhanced by cryogenic processing, these springs exhibit improved structural stability and wear resistance. The moly plating adds an extra layer of protection, reducing friction and enhancing the overall performance of your AR-15 M4. Upgrade your firearm with this premium hammer spring for a noticeable improvement in reliability and efficiency.