IMO wood has no place on a gun. It was only used in the beginning because aside from heavy metal, it was the only option. Now we have much more durable, longer lasting, won't split with a hot load, won't scratch materials.
Shark is saying that the AKM is an assault rifle (we're using military terms here for military-spec [full-auto] weapons), whereas the RPK is a squad automatic weapon. The RPK essentially fill(ed/s) the same role as our M-249. Would one think of the M-16 and M-249 as being the same? Nope. The RPK just so happens to look like the AKM.
It's on the other side..lol you don't think I would go to all that trouble with out putting the Fenderskirts on? Geez man when you're dressing up your whore you have to put all the makeup on..No laser? Wannabe.