See this is interesting, as I've always thought that the AK was a much stronger piece than the shotgun from zps. What is it specifically that you think lets it down? I think much of the metal lacks definition, but getting a whole rifle on a single 1024 texture is an uphill battle =/
Good suggestions otherwise, though a lot of it falls into 'thought of it, havent decided what to do yet/havent gotten around to it yet'. With luck Contagion will give me a bagload of env work to show off, but thats down the road a bit.