My goal is to improve the safety of as many of the SKS carbines out there as possible for my shooting friends, increase their enjoyment of the rifle, and improve the militia's marksmanship! It is my opinion that the SKS is much more accurate than generally credited, and that trigger function, bedding/stock fitment, and proper use of a sling ( USGI web sling adapted for loop) are the three most important things a serious rifleman can do to improve the "shootablility" of Simonov's weapon. Besides practice, these items are excellent investments in assisting the true rifleman in delivering accurate, consistent fire down range.
SKS trigger groups have an excellent design thanks to Mr. Simonov. The problem lies with their hasty assembly which precludes extracting the potential from the design. This becomes even more important when you realize that the "safety" merely blocks the trigger lever and does not secure either the hammer or the sear. Their safety and performance can be greatly improved with reduced pull, reduced creep, smoothness, repeatability, and clear 2 stage operation.
With the breech clear, cycle the bolt to cock the hammer, remove the rear cover, remove the recoil spring, and squeeze the trigger to observe the hammer's movement PRIOR to let off as the hammer slides on the surface of the sear:
With my match/target SKS trigger work, you get it all--- safety, clear 2 stage operation, lowered pull, much less creep, smoothness, repeatability, consistency and give up nothing, well, a few bucks. Each trigger group is different and each one must be done individually; there are no "jigs" or systems that will allow a sear/hammer to be cut for one that will work optimally for another. These are all done by hand for maximized results.