@Mathaaroneyy I'm a fan of the PO 4x17. It's essentially a Russian ACOG. It has a very usuable reticle with BDC, clear glass, and an excellent field of view. My only warning would be the mounting screw. If you over tighten it, it will break. Otherwise, it's been such a fantastic scope that I picked up two.
TxZen's info page on it: https://russianoptics.net/PO4x17.html
Here it is mounted on a B33 top cover.
Here's my other one mounted using the side rail the RS Regulate mount (bottom rifle)
The PO 3.5x21P's are also out there but they are absolute bricks. I have one on an RPK74 and it's fantastic with a great reticle, but large doesn't even begin to describe it.