A great option for a light-weight sks build - ATI Outdoors Strikeforce SKS Folding Rifle Stock w/ Gen 2 Tactlite

My in depth-review of this product will cover a few key design features as well as my overall opinion of the furniture.

-Light-Weight
This furniture is pretty light and easy to handle. That being said, depending on the length of the barrel of your SKS, the final result could possibly make your build slighty front heavy. I have a yugo that came with the grenadier 16' barrel, so mine ended up being slightly front heavy, which isnt too big of an issue in my eyes.

-Ergonomics
This furniture is generally low profile, with plenty of space to mount optics, lasers, lights, grips ect. The upper handguard it comes with is pretty good, and fits into the build pretty well with minimal workage of the furniture material. The stock folds to the left and doesnt pinch fingers while doing so, nor is the latch too dificult to work quickly.

-Possible need to manipulate the furniture
The SKS is a well renowned rifle, produced in many different places over a long period of time in history. That being said, theres a good chance your SKS will differ from others. This may result in you having to remove material from the furniture in order to get various parts to seat correctly, such as the gas tube and piston and which ever SKS magazine you decide to use.

If you are inexperienced with gunsmithing and making minor adjustments to parts and furniture, have a professional seat the parts for you as to not risk damaging your new furniture unnecessarily.