Engineered to give you increased accuracy at a price you can afford. The Parametric Trigger is Bowden's answer to the gritty mil-spec triggers that destroy your accuracy. All steel components are hardened 4140 steel, black nitride coated and cut 100% with wire EDM machines for exacting tolerances of .0002 in critical places. The hammer spring is made from heavy-duty spring steel giving you the hard-hit needed for even the hardest primers. Designed to reduce the amount of pressure it takes to fire the rifle. Factory set and locked between 3.5-4.0 lbs.