Burris tripler - Burris AR-Tripler Rifle Scope w/ AR Pivot Ring

For the money this one is tough to beat! I have this paired with an Aimpoint PRO on a Colt LE6920 and with the Aimpoint all the way forward there is still one rail space to fit a rear BUIS as long as it's a low profile (like Magpul MBUS Pro, the regular polymer MBUS sight will not fit).

Low light performance is acceptable but not perfect, for that you'd need to spend alot more I would think. Edge to edge clarity is very good in my opinion and the eye relief pretty good with the stock fully extended. The Burris beats the equivalent Vortex in every department: clarity, eye relief, and build quality.

Regarding the mount, I read several reviews about the mount having some amount of play. Not sure if those reviews were referring to the push button hinge or the QD lever for attaching it to the rail, but I've experienced no play of any kind. Just make sure you have adequate tension on the QD lever by adjusting the tension screw and you are good to go. Also worth mentioning, I shoot left handed so I had to flip around the mount and remount the tripler the other way. Not a big deal to me but maybe for you if want to use your thumb instead of fingers to flip the optic over. For right handers there is no issue.

So far I'm really pleased with this optic and mount set up. You have to remember that this is an optic and mount for $220, so just keep your expectations at that and you'll be very surprised how good it is.