TriggerTech produces a trigger that drastically changes functionality by using a roller. Other trigger designs play with pivots and polishing to try to attain the best break possible. TriggerTech uses patented Frictionless Release Technology(TM) that distinctly improves feel and accuracy. It uses rolling friction leading to unparalleled performance. Drop-in design for lowers with .154" pins. Single Stage Curved or straight trigger Zero Creep Release provided by Frictionless Release Technology(TM) Adjustable from 2.5 to 5 lbs with a patent pending design Enhanced Reset Control(TM) with sub .030" reset Hammer, Sear and Trigger are a Mfg: Triggertech