The EGW Oversized Firing Pin Stop is engineered for 1911 Officers and Government models chambered in .45 ACP with Series 70 compatibility and a durable blue finish.EGW Oversized Firing Pin Stop for 1911 pistolsCompatible with Officers and Government frame sizesDesigned for .45 ACP chamberingSeries 70 firing pin system compatibilityBlue finish for corrosion resistanceOversized design for enhanced reliabilityThis precision-manufactured component provides improved firing pin control and enhanced reliability for competitive shooters and enthusiasts seeking to upgrade their 1911 platform.