MAK90 and BWK92 side by side

From a distance it's easy to see the difference in the magazines on these two The curved 7.62x39 magazine on the MAK90 is much more bent than the slightly curved 5.56x45 magazine on the BWK-92

Each round has a different shape. The 7.62x39 has a tapered shape and when stacked side by side they form a curve. The 5.56x45 has a straight case, so it stacks fairly straight. The 5.45 is in between with a slight curve. Their magazines follow their shape as you can see

From the top and sides the two look about the same

Looking down at the smaller barrel of the 5.56x45 BWK92

Smaller ammo means a smaller magazine and smaller magazine well on the BWK92 in 5.56x45 (.223)

From the bottom the two AK47s look about the same

The two AK47s back to back. The MAK-90s are sometimes incorrectly called MAC-90s possibly because of the way MAC-10 is spelled ? BWK-92 are almost always called a MAK-90

As rare as it is to find two AK47s like these is such great condition, for them to have their manuals is even more uncommon

Here are some scans of the MODEL MAK-90 and BWK-92 SPORTER .223 (5.56mm) instruction manual that came with the rifles in 1990, These are fairly hard to come by so we have scanned these AK47 manuals in and posted them for reference