Your trigger is "where the rubber meets the road," so upgrading the stock trigger has a more significant and immediate impact on performance than almost anything else. The Zev® Professional Starter Spring Kit gives your GLOCK® a lighter and smoother trigger pull with a positive reset by combining the popular competition spring kit with the all-new Zev pro connector. The ZEV competition spring kit contains a heavy trigger spring (heavier is better, as it assists with trigger pull), a reduced-power firing pin spring, and a reduced-power firing pin safety spring.
The Zev pro connector was engineered to provide a consistent, positive reset and a reduction in trigger pull weight without sacrificing the reliability or safety of your pistol. Put them together, and you have all the makings of a competition trigger.