The spring kit is meticulously engineered to optimize the performance of your AR-15, offering a customizable trigger pull experience. When paired with standard AR-15 trigger components, it delivers a consistent and reliable pull weight ranging from 4.0 to 4.5 lb, ensuring precision and control for every shot. For those utilizing JP trigger parts, the kit enhances the trigger pull to a lighter range of 3.0 to 3.5 lb, providing a smoother and more responsive shooting experience. This versatility makes the spring kit an ideal choice for both competitive shooters and firearm enthusiasts seeking to fine-tune their weapon's performance to their specific needs. Steel, yellow-coded hammer and trigger springs