Timney’s commitment to excellence has led them to create the Impact, a high quality AR trigger at an affordable price. The Impact is constructed out of a lightweight aluminum alloy housing, a hammer built from S7 tool steel and shaped using wire-EDM machining, and other components made from A2 tool steel which is heat treated to ensure a long service life. The Impact is compatible with all MIL-Spec AR15s and is installed using the rifles original hammer/trigger pins, and features a crisp 3 pound break. Timney Impact AR15 Right 3lb Straight Trigger IMPACT-AR-ST