First of all, is this supposed to be high-detailed 1st person model or lesser?
Stock: buttplate is NOT that bent; it is a relatively straight piece that digs into your shoulder sending pain and love of motherland right where it hurts. For purpose of 3d models in-game; might as well leave it straight.
Looks to me that vents(on handguard) are a little too thin and long. Need to be a little wider(or simply increase gap between upper and lower handguard) and shortened a little.
Palm swell on handguard seems a little too thin(like on SVD); it should stick out a little more(with smaller size on the top rectangle, of course).
Right side of right, above barrel, directly in front of handguard(where lower handguard retainer is) should have a rectangle and textured to look like Lower handguard takedown lever.
Bolt handle looks way too thin. :L Same deal with top cover button(too slim, need to be fatter horizontally)
Pistol grip shape looks off where it is next to trigger guard; need sharper angle.
Frontsight block hole (between barrel and sight drum) can be bigger.
Rear sight block(where it touches slider on rear sight) looks off.
Magazine catch is bent; it is not bent IRL as far as I know.
Slant brake should be rotated to the right(45 degrees?); it does not simply point up at least on all the AKM I have seen.
For all intents and purposes the selector switch should be modeled at FULLauto(the only way to operate a Kalashnikov rifle) position.
Top cover seems off as well; especially on the front(two horizontal bands instead of vertical; and missing all vertical extrusion).
Receiver on model is not straight... AKM receiver is not like galil; AKM receiver(bottom of it) is straight and angled up slightly(compared to barrel/horizontal).
Also, I find it weird that rivets on receiver(huehuehue romanian huehuehue) were modeled but pins were not.
That is...unless this "akm" is based on some obscure model or very very old ones.
I highly recommend better reference pictures.