CCI Blazer 40 Smith and Wesson Total Metal Jacket Handgun Ammunition uses a non reloadable case made from high strength aircraft gauge aluminum alloy. Clean burning propellants deliver optimum velocity while ensuring consistent chamber pressures. Cases are coated for smooth functioning and corrosion resistance. Non corrosive primers for highly sensitive and reliable performance. Blazer delivers all the performance of high priced ammunition for a fraction of the cost.