Nice sights - Yankee Hill Machine Quick Deploy Top Mounted Deployable Front and Rear Sight

Just installed on my AR. They are bigger than what I expected, but are very nice quality. Out of the package though you need to be cautious. The push pin for the sight pop-ups were very tight. I had to loosen them to get the sights to pop-up and loosened them too much. I pushed the button and the pin/plate on the other side went flying. BEWARE... when you first adjust out of the package, do it somewhere you can find the pin/plate when it goes flying... Found the part readjusted and now it's easy flip up and down. They connect and disconnect very easily as long as you have your Allen wrench.