The Hornady Critical Duty 10mm Auto 175 grain FlexLock ammunition is engineered for law enforcement and personal protection meeting stringent FBI Protocol standards. This premium defensive round features Hornady's innovative FlexLock bullet technology with a patented polymer tip that eliminates clogging and ensures consistent expansion through all common urban barriers.Hornady Critical Duty 10mm Auto 175 Gr FlexLock - SKU 9125620 rounds per boxMuzzle velocity: 1 160 fps Muzzle energy: 523 ft-lbsFlexLock bullet with InterLock band for maximum weight retentionNickel-plated brass cases for enhanced feeding and visibilityLow flash propellant preserves night visionBoxer primed non-corrosiveDesigned for superior barrier penetration and consistent terminal performance this ammunition delivers reliable expansion through glass plywood heavy clothing and automotive barriers. The bright nickel-plated cases simplify chamber checks in low-light conditions making this an ideal choice for professional law enforcement and serious personal protection applications.