Made of heavy duty 14 gauge steel, and super compact only Compact size 7.5" x 5.75" x 2.25" the ShotLock features adjustable felt lined trigger guard blocks that can be moved to accommodate either left or right handed shotguns, a reversible door that can open either to the right or to the left and a heavy duty mechanical 5-button push button lock with a 1,000+ lock combinations. The ShotLock secures your semi-auto, pump, or over and under shotgun both comfortably and securely with virtually no access to the trigger assembly. The ShotLock can be mounted in a variety of home or vehicle applications. Specifications: Fits pump, semi-auto, side-by-side and over/under shotguns Will fit most pistol grip shotguns Compact size 7.5" x 5.75" x 2.25" 14 gauge steel construction Reversible left or right opening door Accommodates left and right handed shotguns Mounts on a wall or in a vehicle 1000+ combination programmable push-button lock 2-year limited warranty Made in the USA