Just acquired a slightly used one from an auction block. Planning to replace the Mark 4 16X that is currently mounted on my 308 Tactical Rifle which is way to much scope for this rifle. Never owned a Nikon scopes, so any comments are welcome. Thanks and by the way, I paid $490.19 for it plus $14 for the shipping. Is it a good deal or what?. I have 3 days satisfaction return guarantee.