The Master Lock 94DSPT Set Your Own Combination Trigger Lock features a steel and zinc body for maximum durability. The protective rubber pads protect gun's finish from marring or scratching. The 3 dial combination security offers keyless convenience. The Lifetime Guarantee provides peace of mind from a brand you know and can trust. This product is not guaranteed to lock all firearms. It will block access to many guns when properly attached. Some lever action rifles, firearms without trigger guard surrounding the triggers, guns with extra light or extra wide triggers or guns with trigger shoes or extensions may not be able to be effectively locked with this gun lock. Do not use this lock on a loaded gun. Attempts to use on a loaded gun may result in accidental discharge. If the lock does not securely fit your firearm or becomes damaged, do not attempt to continue using this product on your firearm.