Keep your Glock running smoothly with this genuine OEM factory recoil spring assembly! This is the exact part (number SP01533) that Glock installs at the factory, consisting of the guide rod and captive recoil spring. It's designed for full-size 9mm/.40 cal/.357 Sig models including the Glock 17, 22, 24, 31, 34, 35, and 37. The polymer guide rod and steel spring are built to handle thousands of rounds, ensuring reliable cycling and proper lockup. Recoil springs are a wear item and should be replaced every few thousand rounds for optimal performance and safety. Whether you're doing preventative maintenance, troubleshooting feed issues, or just want a fresh factory spring, this is the part you need. It comes brand new in its packaging. Trust the original equipment to keep your pistol reliable. A must-have for any serious Glock owner.