The RG421M is an RG series solid body electric guitar model introduced by Ibanez in 2017. It was manufactured in Indonesia.
The RG421M features a mahogany body bolted to a maple Wizard III neck with a 24-fret maple fretboard with black dot position markers. Components include dual Ibanez Quantum humbucking pickups mounted in pickup rings and a fixed bridge.
The RG421 is a similar model with a rosewood fretboard.