Best mechanical design i've seen - TRYBE Defense AR Ambidextrous Enhanced Mil-Spec Charging Handle

I haven't seen a lot of ambidextrous charging handles but, of those I have seen, this is the best mechanical design. Not being a mechanical engineer, I'm not exactly sure what the mechanism style is called but I'll call it a transfer bar. Either side you pull transfers the motion to the other side so there's virtually no difference in experience whether you pull left-handed or right-handed.

Of the several I ordered, only one seemed to work smoothly out of the package, left- or right-handed. The rest were stiff and hard to operate until I added a few drops of oil in the pivot points. Once I did that, they all operated so much smoother than even the one that I went back and oiled that one, too. Lesson learned: a couple drops of oil goes a long way in making this totally awesome.

I have a couple left-handed ARs that have standard charging handles. I've learned to use them and had accepted that as being as good as I could expect. These TRYBE handles are so awesome, though, that I'll be ordering more of these to upgrade those and for any new ARS I build or buy.