Hi Winter Hawk,
Yes, the Mossbergs 464 lever ejects from the top at an angle like the newer versions of the Winchester 94. It has a bridge at the rear of the receiver that is tapped for a scope mount that the bolt runs under. It uses the same weaver bases front and back and is very scope friendly in my experience.
A really nice gun for the money, it is like an improved Winchester 94. You may or may not like the safety on the tang that is similar those on shotguns. My gun seems to like all the factory ammo I have put through it so far.
-Robert