What's the difference between AK47 and 56,84S? How can you tell it intuitively?

Model 56 imitates model AK47. The groove above the socket of model AK47 magazine is relatively large, while the groove of model 56 is very small. Type 56 adopts a folding triangular bayonet, AK47 sight is a semi-closed double-sided wing, and Type 56 is a fully closed buckle with an upper opening. The reinforcing ribs on Type 56 magazine are also different from those on AK47 magazine. As for 84, it is easier to distinguish. Because it is an export type, it uses NATO standard 5.56mm caliber ammunition. The taper of this ammunition shell is relatively small, so the arc of 84 magazine is very small.