use the one installed instead of rear sight, such as this one
BC tactical made a solid sks rail mount that would replace the rear sight. However they are hard to come by nowadays as he no longer makes them.
If you can find a spare dust cover and make it tight or get lucky and have it be very tight on your rifle what i have in my two pics is very nice. What I have is a spare dust cover that was very tight on my rifle with a weaver base that matched the contour on the dust cover, drilled and tapped on. On the second pic I have to red circles, if you have a spare dust cover that is loose you can put a few tacks on those surfaces with a mig and then file. I had to do that to get a mount on my brothers rifle. It sounds like its more work than you're interested in from your OP but it may help you out in the future or maybe someone else who is reading this thread. I had a gunsmith drill and tap the base onto the dust cover and I don't know what the base is, its just something that i found at a gunshow that fit.
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My favorite setup over years for the sks. Scout mount is a cheap solution, easy to install and will hold 0. Its solid and a red dot on it will do the job. On the pic i use a holosun 507c solar. I recommend it regardless the price.
I would not recommend the magwedge full rail. You gonna drill off the cover pin and its a pain when it comes to field strip. I wouldnt use that setup ever.
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BC tactical made a solid sks rail mount that would replace the rear sight. However they are hard to come by nowadays as he no longer makes them.
If you can find them the Midwest industries sks mini red dot mount is nice and low but as others have said scout mounts are great options
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I don't know if there is a post cap to post image. You do have to link images from another sight. I use IMGUR and post the BBC code from the sight.