Glock OEM Recoil Spring Assembly - G17/G22/G31/G37 Gen 4

Features

1. Genuine Glock OEM Part — Factory-original recoil spring assembly built to Glock's exact specifications for guaranteed fit and function.
2. Marked 5579-1 — Silver spring stamped 5579-1 on the guide rod end for positive identification of the correct assembly.
3. Multi-Model Compatibility — Fits full-size G17, G22, G31, and G37 platforms across the calibers those frames run.
4. Caliber Coverage — Handles 9x19mm, .40 S&W, .357 SIG, and .45 GAP chamberings on standard full-size frames.
5. Captive Assembly Design — Spring and guide rod ship as a single captured unit for fast, tool-free drop-in installation.
6. Steel Spring Construction — Durable steel spring delivers consistent tension and reliable slide return through thousands of cycles.
7. Polymer End Caps — Molded polymer front and rear ends seat the assembly correctly against the barrel lug and frame.
8. Maintenance Wear Item — Ideal for scheduled replacement to restore original recoil control and reliable cycling on a high-round-count pistol.
9. Made in Austria — Produced by Glock to the same standard used in factory-assembled pistols.