|It seams rock solid, and has great, clear optics for the price. Retains functional iron sites!
Like all aftermarket receiver covers for the sks it REQUIRES filing. If you buy it and whine about having to do 5 minutes of craftwork, you are very naive. I sat down, filed it for a few minutes, occasionally checking fit, and then put a little blue on it. Now it FITS BETTER than my original, rattling cover; very solid fit.
The only con I can think of is when you remove the receiver cover for cleaning you potentially lose your zero. But if you want a scope on your sks that's something you'll have to live with.
I personally think it is a great product for 50 bucks.