Designed for the Ultimate In AR Performance HIPERFIRE(R)'s Most Popular Trigger Virtually No Take-Up/Pre-Travel Very SmoothBONUS BENEFITS Cam-Over Toggle Engine(TM) Very Hard Hitting Hammer Soft-Start Lock-Up(TM) for Pre-Ignition Stability You-Adjust Pull Weights of 2 1/2 and 3 1/2 lbs. Straight Trigger Bow HIPERSHOE(R) Finger Pad Revolution(TM) Changes the Trigger Lever Length for Fine Weight Adjustment Changes the Trigger Lever Length to Further Adjust Pre-Travel Position Your Finger in the Same Place Every Time Reduces the Perception of Trigger Weight Still FurtherSTANDARD BENEFITS Semi-Auto Single-Stage Crisp, Clean, Trigger Break Very Short Over-Travel Very, Positive Reset You Can Feel and Hear