After two years of development and tens of thousands of rounds of testing, ZEV is proud to release the all-new PRO connector. Engineered to provide users with a consistent, positive reset and a reduction in trigger pull weight without sacrificing the reliability or safety of your pistol. Whether used in conjunction with a ZEV trigger or with your stock Glock trigger, the PRO connector will provide a noticeable increase in performance and is ready to drop-in and use straight from ZEV, no fitting or polishing required.