This drop-in trigger provides the operator with a crisp, positive trigger with no fine tuning or adjustment necessary. Unlike some other "target" triggers, the unique hammer design creates reliable ignition with military and surplus ammunition. Precision CNC machined and or EDM cut from solid bar stock and featuring a hammer trigger and disconnector manufactured from H13 steel, this trigger more than earns the right to wear the Bullet Proof name that Wilson Combat is known for. The trigger features an exclusive 1911 style half-cock notch which makes the TTU extremely safe and also meets or exceeds all military specifications for drop safety. First stage breaks at 3lbs followed by a second stage at 3-3/4lbs.