This shows a nice looking setup that I'd like to try, more for an AR though. JP video go to the "CTR-02" video.
This looks like a possible option also for AR's.JP J-point mount
Either one of these should give you a red dot and only weigh a couple ounces extra. I like the mount for the Larue's but it seems like it would put the red dot pretty high up? The position shown in the video looks pretty natural to me.
