The single WORST thing about the poor little SKS is that Bubba thinks that because it uses the same ammo as the AK, it has to look like an AK or like what an AK SHOULD have looked like were it designed by a prop master for a sci-fi movie. And that is too bad, becuse the SKS is a decent little semi-auto rifle which deserves better than what Bubba is giving it.
It is a nice, handy, little, lightweight semi-auto carbine which fires a true medium-power cartridge. The ammo actually is about th power of a low-level handload for a .30-30. It is NOT the Hammer of Thor, nor is it a Buck Rogers space-age machine-gun. The name says it all: Samozaradniya Karabina Simonov: Simonov's Self-loading Carbine.
It has a gas-oprated mechanism run by a short-stroke piston and a tilting-bolt system derived from the original Saive patents of 1936, the same patents which gave rise to the PTRS anti-tank rifle, the SAFN and the FN-FAL. It has a built-in Magazine which is loaded through the top of the rifle with Chargers. The Magazine my be emptied at any time by pushing the "dump" button, releasing the floorplate to hinge downwards and forward. The stocks either are Arctic Birch or a laminate. The Birch is so tough you would not believe it, the laminates last forever and do not warp.
The WORST thing about it is the ammunition. The ammo which is on the market now is ancient, for the most part, and it is corrosively-primed. It was decent ammunition when it was made, but it now is 20, 30, 40, 50 years old..... and corrosive primers AGE and, before they start dying on you, they give you erratic performance, which is what all these guys are complaining about. Best thing to do if you want cheap ammo is buy a crate of the stuff and a couple hundred rounds of good brass, change-over the factory loads into fresh-primed brass casings. The life of modern stybnate/resorcinate-based primers is not known because they have only been in use for 75 years or so. They LAST very well.
If you don't mind a nice-looking small rifle which is almost totally trouble-free and will last forever, then an SKS is for you.
If you want a Buck Rogers Space Cadet Machine Gun, go buy one of those.
But don't try to turn the decent little SKS into the Buck Rogers model.