Decent backup flip-up sights - Magpul Industries MBUS Front Flip-Up Back Up Sight Gen 2

These are my goto backup sights. I like that they are spring loaded and flip up by pressing the button on the top (or the lever on either side), so they can be engaged quickly if needed in an emergency. I usually like a reddot optic that can cowitness to the irons and these are good for that. Without the reddot, sometimes the front post is a little hard to pick-up so if I was doing irons only I'd prob splurge on something metal and with a higher vis front post. Since I use these as true backups in case my primary optic goes down in an emergency, I think these are the least expensive flip-up irons that meet all of my requirements and I'd trust my life to. They are relatively easy to zero and come with a front post tool.