I will be buying these from now on. - Griffin Armament C2E Contour Connect End Plate

Rugged. Solid. The two selling points for me was the thickness, almost twice as thick as a cheap one, and the tang being fully squared off. It fits perfectly snug in the key way. Finish looks great, just like the picture. Then again, my guns aren't safe queens that I shoot while holding out my pinky, so even if it looked like (insert non family friendly word here) I wouldn't care because it works.