This is the same awesome trigger we put in our CA-15 rifles. Zero creep, breaks like glass every time and has an extremely short overtravel. Non-adjustable and pull weight set at 3.5 lb. The first stage is an almost imperceivable .75 lbs. and the second stage is 2.75 lb. Made of all stainless steel components with an aluminum housing which makes is a complete drop-in trigger.