ISMI Recoil Spring Glock 17, 20, 21, 24, 31, 34, 35 20 lb Chrome Silicon

Product #: 618313 ISMI #: Glock17-20
$7.99

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Product Information

Replacement recoil spring. Some fitting may be required.

Technical Information

Notes:
  • Current production factory Glock springs are 16 pounds. Early, non-captive versions of the 17 and 17L have recoil springs of 19 pounds.
  • Recoil springs fit over a pistol's guide rod and control how the pistol's slide functions.
  • In general, heavy loads need heavy springs and lighter loads need lighter springs. There is no hard and fast rule as to how much "Spring" a pistol needs. Too light a spring and the pistol opens and closes early and hard, increasing the felt reoil and battering the frame. Too heavy a spring and the slide is hard to open and may not cycle completely, jamming the pistol.
  • Shooters who are using +P ammunition or self defense ammunition will likely need heavier recoil springs.
  • Shooters who are using target ammunition may be able to use lighter recoil springs.
  • Installation requires disassembly and reassembly of the pistol's slide.
  • A non-captive guide rod spring is highly suggested. It keeps you from having to disassemble the factory Glock captive guide rod. Glock 17, 22, and 24 Guide Rod #114-642. Glock 20 and 21 Guide Rod #119-858. Glock 19 and 23 Guide Rod #719-532.
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