The GRG150B is an RG series solid body electric guitar model introduced by Ibanez in late 2015. It is produced in China as part of the entry-level GIO line.
The GRG150B features a basswood body bolted to a maple neck with a 24-fret fingerboard with white dot position markers. Components include Ibanez Infinity R pickups with a pair of humbuckers flanking a single-coil and a FAT-10 synchronized tremolo bridge. In 2017, the fretboard material was changed from rosewood to treated New Zealand pine. For 2018 the bridge was replaced with the new Ibanez T102 synchronized tremolo and the Chocolate Brown Sunburst finish was replaced by Walnut Sunburst