This trigger assembly takes advantage of a two stage fire control design that has been trusted in both competition and combat roles for decades. The first stage pull weight is adjustable based on the trigger spring being used. The red spring will give you a 1.5lbs first stage pull and the black Extra Power trigger spring yields a heavier 2lb pull. And you can expect a crisp second stage break at 2.5lbs for a total pull weight of 4-5lbs (actual total pull weight may vary ± .5lb). The 5lb total weight gives the operator a greater level of safety and control in high stress environments but with a second stage pull weight of only 2.5lbs, the shooter can also squeeze off long range precision shots with ease.