AK-74M vs RPK / RPK-74: how to tell them apart
Easy to mix up at a glance. Here is what tells them apart.
AK-74M
What gives it away
Long curved magazine, cylindrical two-chamber muzzle brake, side-folding polymer stock and the rear sight just in front of the dust cover.
Used by
Russia, Ukraine and many others
RPK / RPK-74
What gives it away
An AK with a longer, heavier barrel, a bipod near the muzzle and a long 40- or 45-round magazine or a drum.
Used by
Russia, Ukraine and many others