The RG5-150 also referred to as the IRG720 is an RG series solid body electric guitar model introduced by Ibanez in 1995. It was made in Japan by FujiGen and was a spot model which was offered exclusively by Japanese music retailer Ishibashi.
The RG5-150 features a thick hard maple top with natural binding on a mahogany (or alder?) body bolted to a maple Wizard II neck with a 24-fret maple fingerboard with black dot position markers. Components include dual DiMarzio humbucking pickups, a Lo Pro Edge double locking tremolo bridge and Gotoh tuning machines.
The IRG730 is a similar 24¾" or (628mm) short scale spot model with a basswood body. The RG3120 is a similar model with rosewood fretboard and different neck.