Be sure to take into account the eye relief. I know that it wouldn’t work on my GSG-522 without removing the rear sight and having the scope set back a fair ways. As far as Barska goes, not the greatest. However they can be useful if you hunt rough terrain with a .22. You know for when your cheap sling slips free and it takes a good tumble down the mountain.
Having multiple reticules is more of a selling point to those who don’t know much about scopes. Typically, you install a scope with the reticule that you want for that particular gun. Additionally, optics that feature multiple reticules will often lose zero when switching between them, which obviously negates the purpose of even having a scope at all.
Having said that, I’ve found Barska to be a fairly good brand overall. Mind you, you can go with a better brand for the same or slightly more money. Scopes are one of those things that you typically don’t want to go cheap on unless you’re dealing with a .22 rifle or air gun.
No perrrfect for a sks. Be sure to also buy one of those top mount covers that never tighten up enough to hold zero. That way you can blame that instead of your barfka scope. {tongue in cheek}