Just thought I would add that after trying and owning the 3-9 x 40 version of the Hawke Sport HD scope I have picked up a 3-9x50 IR AO version of the same series and it is even better than the 3-9x40 which I thought would be quite hard. The optics are really clear and the scope fits my rifle perfectly. Most of all it doesn't weigh the rifle down very much. Ideal for hunting.