How Do You Know It's Time for a New Recoil Spring?

Published on June 18, 2026
Duration: 9:53

This guide, presented by Joel Park, addresses common questions about firearm recoil springs, particularly for polymer-framed pistols like the Glock 19 Gen 6. It explains how to determine if a lighter recoil spring is needed for reliable cycling with specific ammunition, like 147-grain loads. The advice emphasizes that for polymer frames, using a lighter spring is generally safe and won't cause undue wear, while cautioning about potential damage in metal-framed guns with excessively light springs and hot ammo. The core principle is to ensure reliable cycling without malfunctions, and the instructor advises against frequently swapping springs for different uses.

Quick Summary

If your Glock 19 Gen 6 fails to cycle reliably with 147-grain ammunition, consider a lighter recoil spring. For polymer frames, this is generally safe and won't cause significant wear. Watch for malfunctions like failure to feed/eject or the slide not returning fully to battery. Avoid swapping springs frequently between carry and competition use.

Chapters

  1. 00:00Listener Question: Recoil Spring Issues
  2. 00:11Glock 19 Gen 6 & 147gr Ammo Cycling Problem
  3. 00:32Polymer vs. Metal Frame Recoil Spring Impact
  4. 01:39Addressing the OEM Spring Not Cycling Ammo
  5. 01:53Signs of a Recoil Spring Too Light
  6. 02:29Choosing a Lighter Recoil Spring Weight
  7. 02:44Finding and Installing Aftermarket Springs
  8. 03:09Don't Swap Springs for Carry vs. Competition
  9. 03:34Glock 48 Setup & Shooting Impressions
  10. 04:16Red Dot Sight Settings & Co-witnessing
  11. 05:17Apex Tactical Trigger Shoe Modification

Frequently Asked Questions

When should I consider replacing the recoil spring in my Glock 19 Gen 6, especially if it doesn't cycle 147-grain ammunition?

If your Glock 19 Gen 6 fails to cycle reliably with 147-grain ammunition, it's time to consider a lighter recoil spring. For polymer frames, this is generally safe and won't cause undue wear. Look for signs like failure to feed or eject, or the slide not returning fully to battery.

Can using a lighter recoil spring damage my Glock or other polymer-framed pistol?

Generally, no. For polymer-framed pistols like Glocks, using a lighter recoil spring to ensure reliable cycling with specific ammunition is safe and unlikely to cause significant premature wear or damage. This is different from metal-framed guns where excessive lightness with hot ammo can be problematic.

What are the signs that my firearm's recoil spring is too light?

Signs of a recoil spring being too light include the firearm failing to return fully to battery, requiring manual manipulation to chamber a round. Another indicator is the slide beginning to move rearward when the trigger is pulled, or the gun consistently short-cycling.

Should I swap recoil springs for different types of shooting, like competition versus everyday carry?

No, it's not recommended to frequently swap recoil springs. Find a spring that reliably functions with your primary ammunition for both carry and competition, and leave it installed. Constantly changing springs adds complexity and potential for error.

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