Trijicon Accupoint 3-9X 40 Duplex with green dot, can be had for $669. Just a little over your $600 . They are great scopes and don't require batteries for the dot. Some of the Leupold VX3 HD would hit your price point. the 2.5-8 or 3.5-10 would work well. If you can find one a Leupold VX-R is a fine scope for the $. There's several others that come in at around 600. My advice is avoid the 50 or 56 mm objective and spend the $ on better quality glass . Good glass is where you get clear , low light performance .



"Why do you ask"?

Too many people spend money they don't have , on things they don't need, to impress people they don't know.