Installed in minutes, the CMC 4.5 - 5.0 lb Curved AR-15/AR-308 Trigger has a smooth feel and ultra-clean break. With exceptional lock time and lighting fast reset, this trigger is unsurpassed by any other fire control group. Trigger pull is factory set between 4.5 to 5.0 pounds, and is not user adjustable. Fits all standard MIL-SPEC lower receivers milled for .154" trigger and hammer pins. This trigger is a completely self-contained, drop-in fire control group upgrade for AR-15/AR-308 rifles. Features: Trigger pull weight: 4.5 to 5.0 lbs. Ultra-crisp trigger. Glass-smooth break. Minimal lock time. Positive trigger reset. Totally self-contained one piece assembly. Made from 8620 alloy steel. Palmetto State Armory, your source for AR parts and accessories!