Well that's good because most manufacturers put the illumination control on the parallax adjustment. A lot of recommendations above are for "smallish" FFP scopes; however, the majority of these still have side focus/parallax which you're trying to stay away from. There are not many manufacturers who are putting parallax on the objective lens anymore. While it may not be the best scope out there, the Leupold Mark AR that loveha mentions above seems to fit most all your criteria, it is a relative cheap scope and you'll most likely get what you pay for but it's probably good enough to get the job done. Out of curiosity why have you said no to BDC? To be honest, a SFP scope with BDC is probably going to get you the most streamlined, and the fact you're shooting 308 means you should be able to get some BDC reticles that match pretty closely with your ballistics. It would also greatly help us if we knew your budget, I could recommend some very expensive optics that might work for you (like the
Swarovski Z6 2-12x50), but if they're out of your budget...
You can also do away with an RDS all together if you look at something like the Schmidt & Bender -
http://www.schmidtundbender.de/en/p...itary-forces/1-1-8x24-pm-ii-high-power-2.html
With regard to scope mounted RDS mount for 30mm tubes the TPS CORA mount works great -
https://www.midwayusa.com/product/1009149834/tps-cora-i-30mm-picatinny-style-accessory-ring-matte
Burris also makes a scope mount for the FFII platform -
https://www.burrisoptics.com/mounting-systems/mounts-and-bases/scope-tube-fastfire-mounts
There are also scope mounts that accept RDS plates right on the rings like ERA-TAC, here was my Schmidt Ultra Short 5-20 with an ERA-TAC mount and a Doctor RDS on it
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