My buddy Mike purchased an Unissued Yugo SKS, and it was dead on from the arsenal of origin. No adjustment to the iron sights was necessary.
After purchasing a scope/reciever cover package that replaced the original rear receiver cover, Mike and our Army Guard Armorer, Rick, took it out to the range to adjust the scope and examine it's full accuracy potential.
The scope was a fixed 4-power model manufactured by Leapers, and the total cost of the scope and replacement receiver cover was no more than $40, so this was a bargain scope to be sure. No Leupold I'm sure (although I've not looked at it as of this writing). However, both Mike and Rick swore that the Yugo SKS was capable of near sub-MOA groups at 100 yards with scope. Its accuracy was frightening. Rick, who shoots .308 Match ammo through bolt actions, was astounded at the dead-nuts accuracy of a (1) surplus (2)East-Bloc and (3)semi-auto rifle; all three descriptors normally associated with firearms that are considered plinkers.
Go to Interordnance.com to get yourself a smoking hot deal on these UNISSED SKS rifles for a mere $109 (dealer cost). You won't regret it. JOE