Copied from an older post of mine, with some additions:
I think it's a pretty fun little carbine! Haven't had any problem with the sights, recoil is pretty light, and I'm finding that follow up shots come pretty easily. Overall the carbine is very controllable. The rifle was very well maintained, and the guy I got it from barely ever used it, hence why he was selling it. It's very comfortable to shoulder and aim, and I haven't really had any problems with the trigger, then again I've also become accustomed to the factory trigger on a Saiga, so take that as you will.
Mine is chambered in .40 and takes 90- series magazines. I've put a couple hundred rounds through it, but so far I'm really liking it a lot! I've used Federal 180gr FMJ, and Fiocchi 165gr JHP and the Cx4 likes both pretty well. With the Federals That thing may as well have been a laser gun at ~75 yards. I also have some S&B 180 FMJ here that I haven't had a chance to try out yet. Love the ability to configure the carbine how I like it, as it already has all the rails, and the guy threw in a couple magazine holders as well as a pretty nice Surefire light and mount. Loving it!