Awesome bolt catch!
I have this bolt catch on four AR builds now, including an AR10. Originally got one for my 3-gun build and liked it so much I now use this on all my builds. Light, nice pads, well made, and easy to access. The upper pad is canted out a little, so your upper does not need a machined recess for it. I've used several other enhanced bolt catches, and they all worked fine, but this one is a half notch better, and, IMHO, just looks cool. But a personal choice.
Reviewed by: Akgunner from Anchorage, AK on 1/7/2017