Each Frame Arm Robot comes with various interchangble parts allowing the users to have a wide range of playability. You can have fun changing the outside armor with other Frame Arm Robot models. Compatible with Kotobukiya Original M.S.G series. You can combine M.S.G parts onto the 3mm connector holes on the body of the armour. The international military alliance "NATIA" (North Atlantic Ocean Tactics Evolution Aggregate), a subsidiary organization of NATO (North Atlantic Treaty Organization), has been seeking a new weapon system format. In 2019 each nation's Armed Forces Department, led by the United States Armed Forces, announced "Human Type Multi Purpose Standard Frame Drive- Frame Architect Design". By creating a universal “Frame Drive” or Frame Architect, each country could develop various outside weapons and armor quickly while largely holding down production cost Although each country had their own original development skills, the Frame Drive’s universality was common for all, thus knowledge and skills could easily be shared allowing the Weapon performance to drastically improve.