Strike SIGRPS11 Recoil Spring For Glock 11 Lb 17-7 Stainless Steel Strike Industries is committed to providing the shooting community with innovative top quality, field ready firearms parts and accessories. By shooters for shooters, Strike uses real world knowledge and experience to bring you the best possible equipment at an affordable price. Strike hard and strike fast with Strike Industries! Fine tune the performance, timing and recoil of your GLOCK pistol with a Reduced Power Recoil Spring from SI. These springs are an aftermarket upgrade that is far superior to the GLOCK factory OEM spring. Factory original springs handle most ammunition and loads very effectively, but you can improve the handling of your pistol by tuning it to your preferred load with a simple recoil spring change. Wound from 17-7 stainless steel flat wire, these springs will last far longer than your worn out factory original spring. Superior design and superb function are what sets SI parts and components apart from the crowd. Specificatons and Features: Strike Industries SI-G-RPS-11 GLOCK 11 lb Reduced Power Recoil Spring 17-7 Stainless Steel Flat Wire Fits: Most GLOCK Models Compact, Standard and Large Frame Models