Excellent BUIS

I purchased the matching front sight with this rear. Great deal from Primary Arms, got them on sale and it was way cheaper than I had seen elsewhere. Shipped fast, nothing but good things to say about Primary.The sights themselves feel rock solid, i'm pretty sure my AR will break before they do. Very easy to adjust, all you need is a bullet and coin for tools. They lock into the deployed position, there is no play when they are deployed. My only complaints are that you can not lower the rear sight with the small aperture selected and that they are about a shade off from Magpul's FDE. Neither of these things offset how well these sights are built and nowhere near worth losing a star over.