ZEV Technologies Guide Rod Small/Standard Frame Glock 17/22/31. Standard or Compact Frame options available. Recommended usage of either an ISMI recoil spring in a corresponding correct weight for your pistol. In most cases 13 lbs fits best. ZEV's Glock 19 stainless steel guide rod also for G23 G32 G38 pistols. Recommended with an ISMI recoil spring in a correct weight (usually 13 lbs).ZEV Guide Rods are NOT Compatible with Glock Factory Guide Rod Springs. Specifications for ZEV Technologies Guide Rod Small/Standard Frame: Manufacturer: ZEV Technologies Color: Steel Finish: Stainless Steel Gun Make: Glock Gun Model: Glock 22 Glock 17 Glock 31 Package Contents: ZEV Technologies Guide Rod Small/Standard Frame The ZEV Technologies Stainless Steel Guide Rod Small/Standard Frame Glock 17/22/31 G.ROD-STD-SS is a quality addition to the ZEV Technologies lineup. For more great deals on Gun Parts by ZEV Technologies please browse our Zev Technologies Gun Parts page. What firearm models does the manufacturer say ZEV Technologies Guide Rod Small/Standard Frame is compatible with? The manufacturer suggests that ZEV Technologies Guide Rod Small/Standard Frame is compatible with Glock 31 Glock 17 Glock 22ZEV Technologies G.ROD-STD-SS: Guide Rod Small/Standard Frame Glock 17/22/31