Abstract: A low visibility gun lock to prevent the unauthorized use of a firearm which includes a lock case shaped to be received in a cartridge chamber of the firearm and a rod assembly having both a central rod configured to interengage with the lock case and a muzzle sleeve attached to the central rod in an rotational engagement such that the muzzle sleeve rotates relative to the central rod. The low visibility gun lock further including a key form within the muzzle sleeve which is fixed relative to the central rod which allows a key configured to pass through the muzzle sleeve to engage and rotate the key form without rotating the muzzle sleeve.