Great back up sights - Magpul Industries MBUS 3 Rear Rifle Sight

Magpul so you know it's quality. Therefore, this is priced reasonably for the quality you know you are getting. These sights are easy to use, easy to adjust, easy to see. They co-witness with standard height red dots. Mine are centered in the window of an EOTECH mounted directly to the picatinny rail on top of the PSA-15 upper. If I ever lose battery power, I'm only two quick button pushes away from reengaging the target. The reason I only give four stars is, as a right handed shooter, I prefer the previous generation which had the activation button on the left side of the sight. This made it easier to flip the sights with minimal hand/rifle movement. The activation button on the MBUS 3 is in the middle of the sight. These are still great sights and unless you are nit picking you will be glad you purchased. I would give 4.75 if I could. I recommend buying as a complete set.