Abstract: A safety device for quickly and easily rendering a firearm unloadable by obstructing the barrel of the firearm. The device includes tow generally elongated rods, each rod having a pin dimensioned to be received in one of firearm and an arm having a plurality of apertures therethrough, at least one aperture on one rod being alignable with an aperture on the other rod. The arms of the two rods are dimensioned to overlap when the pins are positioned within the barrel of the firearm. A bolt of a lock may then be passed through a pair of aligned apertures, one on each of the two rods, so that the pins of the rods may not be removed from the barrel.