Ideally, it would be a 1-5 Leupold MRT w/qd rings (I'd look to Larue first!) per 0612 Devil's and H20's rec. Great piece of glass for something like this. However, I've always liked that Elite IR and reticle, it was getting lonely in my gun closet, didn't want to sell it, so it got sprayed with my bush rifle and works great. Need to tinker with the bdc drum to remark it for 7.62. Suck thing is the bdc knob has detents on the underside of the drum rim, unlike aftermarket bdc knobs or ones you can but for a standard scope. So, I need to hope some of the clicks on my 5.56 M193 have a corresponding range for 147 gr. 7.52 nato. As an aside, I wouldn't mount anything down on the barrel unless I had a Sage like H20. Too hot and I'm less than impressed with that SA scout mount. I know SEI's mount is better, but man, I like the ARMS 18 w/ a qd scope. I lucked out and this setup allows use of irons while on the rifle with the ARMS18. Also, needed a USGI ejector, ejector spring, and extractor to clear the ARMS18 mount. Those things should be replaced on an SAInc bolt (forged) anyway IMHO. Interestingly I was getting 20% FTE, swapped out the ejector and spring (almost 1/4" shorter than USGI !), and went to 100% 2 o'clock ejection, farther but a tight pile, and no more brass dents on the underside of the mount.