The RG420GK is a Roland GK-compatible RG series solid body electric guitar model introduced by Ibanez in late 2002.
The RG420GK features a basswood body bolted to a maple Wizard II neck with a 24-fret bound rosewood fingerboard with dot position markers. Components include dual Ibanez Vintage humbucking pickups a double locking tremolo bridge and a locking nut. It also has a Roland GK hexaphonic (hex) pickup which is installed between the bridge and the bridge pickup, which allow the user to connect to a Roland GK system using a 13-pin connector.
The RG420GK was discontinued after 2002, although another Roland GK guitar, the RG1520GK, was introduced in 2003.