Once again it is really simple. Strictly adhere to the safety rules, and keep your finger off the trigger until your on target and ready to destroy something. If your finger is on the trigger and you discharge the gun without intending to do so, that is not an accident, it is negligence. Some people are being willful in their disregard of this fact! Carriage and use of firearms require a heightened level of awareness and discipline. Those that require a mechanical device to make up for deficiencies in these areas, as well as lack of common sense are dangerous, and better serve themselves and others, by finding non lethal means of self defense.