I haven't shot AKs in many years, but when I did the Sabrewerks KOP with an Aimpoint micro was the bees knees. I tried the handguard mounts like the Midwest Industries and Ultimak... side rail mounts like the RS Regulate and Midwest Industries... and rear sight replacement RMR mounts including the Midwest Industries, TWS, and Attero... but the Sabrewerks was the best I ever used overall.
I did
try to run an LPVO (and a TA44 ACOG) on my AK SBR for a short while, but it wasn't ideal by any stretch. Issues with eye relief, height over bore and cheek weld are abundant. It was awkward to shoot, terribly un-ergonomic, and I didn't feel like the magnified optics really complimented the platform enough to justify the downsides. I found one old picture for proof of the effort. This was the MI 30mm side rail mount with a Gen 1 Viper PST. Due to the height of the rail and mount, and the size and location of the magnification ring, it couldn't be moved forward even 1mm further without hitting the dust cover, so this setup lasted all of about 3 hours before I scrapped the idea and went back to an RMR in an Attero rear sight mount (on this particular gun).
Keep in mind my experience with AKs is 7 or 8 years out of date at this point, so new products may be out now that weren't back then. The photo above, for example, was taken in 2012 I believe, and that was one of my last experiments with the AK platform before switching back to the AR platform 100%.