I have decided to get a RMR sight for my AR and wanted to get some opinions on the best mount. The reason I picked the RMR is that I have a Hakko Panarama MK III and really love the way it performs on my S&W 15-22. It is small, light and has excellent glass. The RMR looks a lot like it and I'm going to give it a try. I wanted a mount that would keep the sight as low as possible, while still allowing me to co-wittness my Buis sights. Any input would be appreciated. Thanks.

Check out some of the big names.

Larue makes a canted mount with lower 1/3 cowitness.

American Defense mounts are great.

Scalarworks has a really lightweight option.

I'm sure there are many other manufacturers that could fill what you need.

Scalarworks or Larue

Larue is what you seek.

LT827 for 1/3 co-witness
LT837 for extra absolute co-witness