The True Precision Recoil Spring Tuning Kit is engineered specifically for Ruger RXM pistols and aftermarket copies delivering optimal performance for compensated and suppressed setups. Crafted from high-strength chrome-silicon these springs provide consistent long-lasting performance exceeding 20 000 compressions each.True Precision Recoil Spring Tuning Kit for Ruger RXM6 spring weights included: 11-LB 13-LB 15-LB 18-LB 20-LB and 22-LBHigh-strength chrome-silicon construction for durabilityIncludes stainless steel billet-machined non-captured guide rodDesigned for compensated and suppressed configurations100% Made in the USAPerfect for fine-tuning your RXM's cycling reliability and reducing recoil across varying slide weights ammunition choices and muzzle devices. This comprehensive kit ensures you can optimize your pistol's performance for nearly every shooting situation.