This 15" cable gun lock is easy to use and an important tool to protect family and friends to avoid tragic accidents and unauthorized use. Cable gun locks fit most pistols, handguns, rifles, shotguns, modern sporting rifles, BB-guns, as well as paintball, pellet, and airsoft guns. Intended for use on unloaded firearms. This lock is a California-approved firearm safety device that meets the requirements of Penal Code section 23655 and the regulations issued thereunder. This lock has been approved by the Colonel of the Massachusetts Department of State Police in accordance with the provisions of M.G.L. c. 140, § 131K