The four rules of firearm safety apply to more than traditional powder powered lead launchers:
A New Jersey man is making a quick recovery after accidentally shooting a 4-inch (10cm) nail into his heart.
Dennis Hennis, a 52-year-old self-employed builder, was working on his neighbour’s roof when his nail gun jammed and he tried to clear it.
The nail pierced the right side of his heart and he went into cardiac arrest.
Does the device you’re handling launch dangerous projectiles? If you answered yes then rule two applies, only point the muzzle at things you’re willing to destroy.