The RX-78-4 Gundam Unit 4 from Kunio Okawara's M-MSV design series, as it appears in Mobile Suit Gundam Side Story: Space, To the End of a Flash, joins the Master Grade lineup. Includes pieces to build its mega beam launcher, hyper beam rifle, beam saber, and foldable shield.
- Manufacturer: Bandai
- Scale: 1/100
- Grade: Master Grade (MG)