ZEV Technologies upper upper 9mm kit. This kit is for any Glock 17, 19, 26, and 34 Gen 3 / 4 model.Assists with pull reducing overall trigger pull weight and even softer trigger pull. Omaha Outdoors is a an AUTHORIZED ZEV Technologies dealer. Firing Pin Safety (FPS) Spring. The item "ZEV Tech UPPER PARTS KIT 9MM for Glock 17 19 26 34 PK-UPPER-9" is in sale since Thursday, May 3, 2018. This item is in the category "Sporting Goods\Hunting\Gun Parts\Pistol". The seller is "omahaoutdoors" and is located in Rosenberg, Texas. This item can be shipped to United States.