Ok. Thanks guys! I really appreciate your input..

Ah, a mount for a grenade launcher. That makes sense. I found a one piece scope mount on cheaper than dirt which might work pretty well. Its only $40 bucks, so I'll give it a try. I'm also curious about aimpoint type sights. I see how they would work well for rapid target aquisition, but how precise are they? I guess it really doesnt matter with the way this rifle is set up..

Let me ask this another way: If you just purchased a rifle similar to mine, what type of sights/optics would you equip it with?