P-Bandai: MG 1/100 V2 Assault Buster Gundam [Expansion Set] Sample Images by Dengeki Hobby

P-Bandai: MG 1/100 V2 Assault-Buster Gundam Ver. Ka 
Release Date: December 2018
Price: 7,560 Yen

This kit comes with all the parts you would need to make the V2 Assault-Buster Gundam Ver. Ka kit, that includes the extension parts and the V2 Gundam's body. 

Bandai also molded the parts according to the anime, which provided gold plated parts instead of plain yellow from the regular released MG 1/100 V2 Gundam Ver. Ka.

The kit also provides a longer sheet of decals that offers more detail variations when detailing.