AR15 Competition Trigger Why settle for a sloppy trigger which can cause a good rifle to shoot badly? Now shooters can replace creepy two-stage triggers with one that is smooth and breaks crisp. The trigger is factory preset with a pull weight of either 3 or 4 pounds. Installation is quick and no adjustments are necessary, 100% true drop-in trigger. The trigger module installs using your rifle's original hammer/trigger pins and the proprietary design eliminates pin rotation and walkout. Since it was founded in 1946, Timney Manufacturing has built a reputation based on the quality of its products. Because of the precision machining and workmanship that goes into each and every Timney product they are often referred to as "The World's Finest Triggers" and they are used exclusively by some of the world's best custom gun manufactures. Made in the USA. PIN SIZE: AR-15 Small Pin .154" (small) /// AR15 Large Pin .170" (large)