Because original Vltor was on 1 big texture, when resizing it it looked bad, so kalasnikov88 had to edit the UV maps so the quality is pretty much good. Only con are the texture misalignment, but really they are hard to fix. So, I won't include texture criteria. ^^
But, on the bright side, you have 4 animation choices (.eXe, DMG, Book and Zeej) and 3 sounds sets (teh strelok, Mingekiller and 7zero) so you can decide which one you like the most.
If you don't like Felipe Paiva's and Shortez's mixed hand textures, I included default hand textures in case you want those.