Tipton Quality Snap Caps45-70 Government2-pack 378183Safely test fire your handgun It is generally accepted that dry firing a weapon on an empty chamber is bad for your firing pin. Tipton Snap Caps solve this issue You should always use snap caps when test firing a weapon or when performing gunsmithing such as trigger pull adjustments or when releasing the tension on hammer springs, etc. Molded plastic to perfectly fit your chamber Built-in spring and brass base with center cap safely take the tension of the firing pin when the trigger is pulled Package of 2