The Universal Cable Key Lock from Franzen Security Products, fits most revolvers and semi-auto handguns, pump shotguns, AR-15 rifles.
This handgun lock is very affordable security.
To use this Cable Lock, simply insert the cable through the action to effectively render the gun unusable. Works on most handguns, pump shotguns, and AR-15 rifles wherever you can lock or interfere with the action.
The cable is a quick, inexpensive way to protect from misuse and accidental discharges.
Compliments of Keith Charley, Krav Maga Defense.