Glock Gen 4 Replacement Stainless Steel Recoil Spring

There are replacement recoil springs for the Glock Gen 4 that are not dual springs like the OEM recoil springs. Glock states that the new dual spring design reduces recoil more than the single spring. If it does…how much?

Glock Gen 4 recoil spring

I received this single spring Glock 22 Gen 4 stainless steel recoil spring from I Love My Glock a few months ago and finally got a chance to try it out. It is designed to fit the Gen 4 Glocks with the larger slide recess. This recoil spring is the same weight as the factory dual spring at 17 lbs. It’s a drop in replacement and fits perfect. It features a stainless steel guide rod in lieu of the polymer OEM.

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I shot 150 rounds of 40 S&W through my Glock 22 with the ISMI single spring recoil spring. It functioned 100%. I could not tell the difference in recoil between the dual spring and the single spring although I did not have 2 Glock 22s to shoot side by side but it felt pretty much the same.

Glock recommends that you replace the recoil spring after 3500 rounds. This recoil spring is a great replacement and at $25 it’s a bargain for a stainless steel guide rod recoil spring. The OEM Glock guide rods are polymer.

Glock Gen 4 Stainless Steel Recoil Spring

You can get a single flat recoil spring assembly,in lieu of the double spring, for Glock Gen 4’s with a stainless steel guide rod. These stainless steel guide rod spring assemblys add weight (almost 2X) and reliability to the Glock.

Stainless steel is more reliable than plastic plus it’s weight helps reduce recoil. The single spring works as well as the double spring. I’ll try to detect the difference while shooting the Glock 22 shortly.

Here is the stainless steel guide rod spring assembly from I Love My Glock. It’s the Gen 3 design but modified for the Gen 4. Notice the end has a large adapter for the Gen 4 Glock’s slide.

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This is a high quality recoil spring assembly and comes in Tungsten too. You can buy it in various spring weights. I always carry a spare recoil spring in my SHTF bag along with another barrel. Spare parts are good assurance.