Glock Gen 1-4 Recoil Springs
ISMI Replacement Springs for Specific Models and Guide Rods
Browse ISMI replacement recoil springs for listed Glock Gen 1-4 applications at NDZ Performance. This category focuses on replacement springs rather than complete guide-rod assemblies. Match both your Glock model and guide-rod configuration to the individual listing before selecting an available spring weight.
- ISMI compact recoil springs — for the listed compact-model guide rods; excludes heavyweight guide rods and full-size models.
- ISMI full-size recoil springs — for the listed full-size-model guide rods; excludes heavyweight guide rods and compact models.
- ISMI Glock 26 heavyweight-guide-rod springs — a separate application for the specified NDZ heavyweight guide rods.
Need a guide rod or a complete assembly? Browse our Glock Gen 1-4 guide rods and recoil spring assemblies. A spring listed for one guide-rod configuration should not be assumed compatible with another.
FAQs
The compact spring is listed for guide rods for Gen 1-4 G19, G23, G25, G32 and G38, and the full size spring for G17, G17L, G20, G21, G22, G24, G31, G34, G35 and G37. Neither fits heavyweight guide rods. A separate ISMI spring is made for NDZ Heavyweight Guide Rods in the G26, G27, G33 and G39.
Not the compact and full size springs, which list heavyweight guide rods under Does Not Fit. The ISMI Glock 26 spring is made for NDZ Heavyweight Guide Rods and is listed for the G26, G27, G33 and G39.
The ISMI spring for the Glock 26 heavyweight guide rod is flat wire chrome silicon, heat treated, shot peened and stress relieved.
Install steps vary by part. NDZ recommends having parts installed by a certified armorer or qualified gunsmith.