Unlike other firearm safety devices, the Child Guard CS-100 isn't a "one-size-fits-all" solution to keeping kids safe from unauthorized use of a firearm. The CS-100's movable safety posts allow the gun owner to fit the unit to his specific firearm, and to move the CS-100 from gun to gun takes only a minute or two. Its flexible design securely fits rifles, shotguns, pistols and revolvers. There is nothing in front of the trigger that can fire the gun, nothing down the barrel that can scratch or damage the barrel, and no floppy cable that can damage the finish of many firearms. The Child Guard CS-100 is lightweight and reinforced with tungsten carbide for exceptional cut resistance and strength without compromising the possible need for quick emergency use of firearms.