I have a brand new Leupold Mark 4 M3 3/4 Mil Dot Long Range Tactical Scope Model 51850. This scope has everything you could want in a tactical scope. It has a 30mm tube, 1 Moa elevation, and 1/2 Moa windage plus side focus. It has a built in bullet drop for the 168 gr 308 wiht other cams available. This is an awsome piece of glass. $750.00 plus shipping Pay Pal extra. I might consider a partial trade for complete AR upper or Lower depending on what it is.