I know it's 'not about the ears.' But, if you saw a carry handle on which the aperture extended a half-inch above the ears, I imagine you might suspect something was wrong.

Thanks for any comparison data! And have a great July 4th! The same distance on my Magpul flip up sight looks like about 1/16' lower. It looks like on my rear sight, the fine aperture is about 1 9/16' above the sight base (I don't have calipers). I seem to recall on my old built-in carry handle rifles, the aperture would be safely below the wings. Since mine is the opposite, I'm wondering if the handle isn't too low but just plain way off any proper spec! As I look at it now, the top of the aperture is sticking out a hair over the 'wings,' even with the knob turned all the way down.

Based on what I've read, it's more common for guys to shoot low, since the poor quality handles are often too low for the 'F' front sight. I had the rear elevation knob turned down as low as she would go, to do a quasi-proper sight-in using the front sight post alone for elevation correction. I took a new upper to the range and she was shooting high, even after a few turns of the front sight post. I was just wondering if anyone with a detachable handle could measure the distance from small aperture to the bottom of the sight base, so I can compare the measurement on my obviously-low quality handle. I have heard of some troubles folks have had with an 'F' front sight and the (usually too low) rear sight on a commercial carry handle, etc. I am aware that there are mil-spec and commercial spec handles out there.

A2 carry handle