Jewell Triggers are some of the widest known and prominent triggers on the market today in the competition circles. Built to extreme precision and exacting tolerances Jewells have been found on most record setting rifles. Jewell Triggers boast the following: A. Internal parts are 3/16″ 440C stainless steel, heat treated and tempered throughout to 58 Rockwell C scale. B. Side plates are .050″ aircraft grade 300 series stainless sheet steel. C. All hardware, including through pins, main spring, spacers, and screws, are stainless steel. Hunter Varmint Rifle w/Top Right Safety and Bolt Release SPRING A INSTALLED SPRING B AND C INCLUDED SET AT 1lb.