www.alexpolyart.weebly.com - Alex Williams, I'm 22 and from North Wales, UK. I'm a Hard Surface Weapon/Prop Modeller who is actively searching for amateur/professional work in the games industry, I'm currently studying Computer Games Design at University to further my abilities. I upload all my work here, old and new, so please judge accordingly.
uuummm, the muzzle of the AK-47 doesn't look like that. and i think i see smoothing errors at the top of the gas block. AND seeing the receiver has those ridges, its an AK-74, and not an AK-47.
Countless images of AK-47's have those ridges, and the muzzle is an extended version of this (http://www5d.biglobe.ne.jp/~longbow/images/ak47muzzle.jpg)
The extended muzzle usually has two holes each side, but I didn't do them since it can be done with a texture.
And the ridges are from this (http://www.survival.us/wp-content/uploads/2011/03/Origanal_ak-47.jpg) which is marked as an AK-47.
If I'm correct or not however, I can't be 100% sure, but I can only go off what I find and the fact there are tons of different versions of the AK rifle doesn't help. The smoothing errors have been fixed since.
The ridges on the top cover are indeed for AK-74's.
Refer to this picture as to how the muzzle looks on 47's: Enemyforces.net