The RGR521EX1 features a mahogany body with a dark swirl finish bolted to a maple Wizard II neck with a reverse headstock and a 24-fret rosewood fingerboard with a pearloid barbed wire inlay. Components include dual "Designed by EMG" humbucking pickups and a standard hard-tail bridge. It was a limited edition model shown at the 2006 Summer NAMM show along with the RGR521EX2, which is similar except for the fretboard inlay.