this GPB kit use HGUC RX-78-2 Gundam Gunpla Starter Kit vol.2 and Avalanche parts from HG Gundam Avalanche Exia.
RX-78-2 looks really awesome with the Avalanche parts, the good thing is this RX-78-2 still equipped with its original weaponry (hyper bazooka, beam rifle, gundam hammer, and RX-78-2 shield)
Cool and still looks classy
I hope this kit released under the GPB line-up *can’t wait!
Source : gundam guy