Diamondhead sight with nitebrite - Diamondhead Polymer Diamond Integrated Sigting System With Nitbrite Top Mounted Deployable Iron Sight

Chose this sight because as I get older I find sight acquisition with this design easier on my eyes. I ordered this to put n a bushmaster LM15 AR plateform. The front sight installed easily on the Midwest Industries free floating rail and activated easily. The rear sight was very hard to slide on the bushmaster rail and install. The polymer base had enough flex to allow installation however when you activated the sight release from the stowed position, it would only move about 85% to the up position and you had to manually push it to locked position.

I removed the sight and used a small file to remove a portion of the base slot that allowed installation and full site extension on activation. Gave this 4 stars vs 5 because I am not sure if this a sight base issue or a rail issue.