This 1911 Competition Mainspring 5-Pack provides premium replacement springs designed specifically for 1911 pistols in competitive shooting applications.1911 Competition Mainspring 5-PackDesigned for 1911 pistol platformsCompetition-grade quality for enhanced performancePack of 5 springs for multiple builds or replacementsProfessional gunsmith and competition shooter preferredIdeal for gunsmiths competitive shooters and firearm enthusiasts who demand reliable high-performance components for their 1911 builds and maintenance.