The True Precision Recoil Spring Tuning Kit is the ultimate spring system for Glock 19 pistols compatible with Gen 1-6 models and aftermarket copies. Engineered for compensated and suppressed setups with 6 different spring weights for precise tuning.True Precision Recoil Spring Tuning Kit for Glock 19Compatible with Glock 19 Gen 1-6 and aftermarket variants6 spring weights included: 11 13 15 18 20 and 22 LBHigh-strength chrome-silicon construction for 20 000+ compressionsStainless steel billet-machined non-captured guide rodAdapter bushing for Gen 4 5 and V models100% Made in the USAPerfect for fine-tuning your Glock 19 with varying slide weights ammunition types and muzzle devices. Ensures reliable cycling and reduced recoil in compensated or suppressed configurations.