A2 buttstock, carry handle, 20" barrel, 2 piece handguard
not the real thing but it looks practically identical.
That is a post VN look.
A1 upper, A1 furniture, three prong flash hider well get you very close to the look you want. You can even get current production lowers that have the same profile as the early lowers.
Before the panic you could find a Bushmaster A1 real cheap, change the furniture and FH, done.