Flip up BUIS with BDC

[samalama76]

Matech makes something like your talking about, but really if you take the time to learn the right way to utilize iron sights they all are built to be able to engage targets up to 800 yards, but it does take practice and you won't be going for tight groups just hits. I personally feel that everyone should learn how to use iron sights and be proficient at doing so, it is a very valuable skill to have.