TriggerTech Trigger, Diamond Curved Trigger, Single Stage, Adjustable, 1.5-4.0LB Pull Weight, PVD Finished Hammer and Trigger Shoe, Anodized Finish, Blue AR0-SAB-14-NNP The AR Diamond Trigger is an adjustable trigger designed to enhance the accuracy and precision of an AR for top competitors" long range shooters and enthusiasts looking to improve their shooting.