What are the best parts for an airsoft gun that looks as close as possible to the Type-2 from Call of Duty: Infinite Warfare

Backstory: Recently I started playing CoD: IW and one of the guns is called "Type-2", it looks like an FMG but the front can be removed and used as its own gun (akimbo hybrid).

I really like how it looks so I want to re-create it in real life, but as an airsoft gun.
I don't care that it won't be an akimbo hybrid like in the game, I just want to ge the looks right.

(this is the Type-2) Looks simple, right?