While reverse engineering the Tikka trigger assembly in hopes to manufacture an aftermarket trigger that exceeded the factory trigger's crisp, clean break, we realized that the only modification that was necessary could be done by replacing the trigger spring. This upgrade will provide a consistent 12 ounce to 24-ounce trigger pull while maintaining the factory trigger's safety. Mountain Tactical Company trigger springs are zinc plated for corrosion protection to provide a lifetime of service. Installation is straight forward. Please note that whenever a modification to a trigger is done, a drop test must be performed to ensure the rifle system wi Mfg: Mountain Tactical