This combination trigger lock will fit most handguns, rifles, shotguns, and MSR's. Easy to install in the trigger guard with positive locking, adjustable ratchet mechanism. The special cushion pads and pins protect the guns finish from marring or scratching. This model has the convenience of a keyless resettable combination. Features: Easy to install and set Features positive locking with adjustable ratchet mechanism special cushion pads and pins protect gun's finish from marring or scratching Offers added convenience of a keyless resettable combination