Good value - Leapers UTG 0.5in Low Profile Riser Mounts for Rifles with Picatinny/Weaver Rail

I gave this 5 stars not because it is a "best in class" but because it is a "best buy". I have 3 of these and use them to mount red dot on rifles. They are the right height for my build on an AR's Picatinny. While they are not "QD" they aren't ard to remove, and the holes allow the use of a 5.56 FMJ as a tool. Still, I put them on and leave them on and for that they are very good value for money.