Air Gun and Firearms Trigger Lock Keep your family safe.It's the right thing. Steel and Zinc body for maximum durability, with a 4-Pin tumbler cylinder that helps prevent picking. This is a first class, top-of-the-line trigger lock. Hardened alloy construction with double-sided rubber lining. Protect your airguns and firearms against unwanted use. A special key is needed to unlock (2 keys are included) Secure twist open/closed mechanism. Ergonomic design facilitates rapid installation. Soft rubber pads protect gun finish. Adjustable width for a universal fit.