The ALG Defense ALG Combat Trigger (ACT) is an enhanced Mil-Spec type AR-15 trigger. The ACT is very similar to Mil-Spec units in pull weight, but the polished surfaces and hard-lubing result in a smoother pull with a sharper break. The ACT now includes two hammer springs. The purple hammer spring installed on your ACT will provide an approximate pull weight of 4.5 lbs. You can replace the purple spring with the provided tan spring, giving you a pull weight of 6.0 lbs. The Mil-Spec pull weight makes this trigger perfect for users who want all of the rugged reliability of a standard trigger combined with the added benefits of an improved pull and a sharp, clean break. The trigger and hammer are 8620 steel alloy and the disconnector is 1070 high-carbon steel, all tempered and hardened to Military Specifications. The included pins are 4140 tempered chrome moly steel that is centerless ground to 0.001" larger than stock for an improved fit within the lower receiver, while still rem...