This is Russian made ZenitCo B-22 rail. Mounts on ZenitCo handguards over iron sight. Allows user to use micro red dot on it. Doesn’t block iron sights. CNC machined, milspec.
Russian made heavy duty upper rail for AK. Allows to mount micro red dot on it. Mounts on ZenitCo B-10M, B-21M, B30, B20U and B21U rails over iron sight. Doesn’t interfere with iron sights.