Great Day's Center-Lok Overhead Gun Rack, for full-size pickup trucks, employs a patented "Opposing Forces" installation system. This allows the gun rack to be solidly locked in place without drilling, bolts, or screws. This means no alterations to the roof to void manufacturer's warranty. The Center-Lok Gun Rack fits all full-size, extended cab, and crew cab pickups with center door posts. Rack positions guns snuggly against the headliner of the truck, providing abundant headroom for the driver and passengers. The guns are held securely in cushioned, moldable gun clips with Velcro straps and adjust independently to different size guns. The Center-Lok is framed in aircraft aluminum and finished in a handsome, durable coat of powder-coat enamel. It expands from 48" to 54" and weighs only 8 lbs.