In the early 1990s there was a surplus of military style rifles coming into the Country. There were goofy thumbhole stocks to avoid violating gun laws or cheap parts for kits. Many of these rifles had pretty ugle stocks especially many of the rifles coming in from China or Egypt. If you have one of those MAK90s or Maadis that works great, but looks like crap, you might want to upgrade your stock with a synthetic. Many of these stocks are made in the US and can be considered US Parts to add to your legal alterations of your gun.
One of the best and easiest upgrades for any of your Chinese or Russian guns is a Fiberforce stock for your SKS. The SKS is one of the better balanced guns that the Soviet Bloc states put out and the Fiberforce stock won’t offset that. There is even a folding stock version that might help you if you want this as a truck gun or want to save some room in your safe. For AR15 accessories, you can go nuts on AR15 upgrades, but think about what you really want on your gun before you just start buying, try handling your buddies guns before you just order pistol grips that you don’t really know much about or how they really feel. Everyones hand is different and not all grips will work for you. You can mess up the balance of your gun if you throw a heavy rail on it, especially if you don’t really need much tactical gear on your gun, why do it.