Setup I wish someone had explained before I bought everything twice

[Magnamus]

I bought a red dot and mounted it, only to realize my irons were useless behind it. I bought a riser then lower irons, then finally learned what absolute and lower-third co-witness actually meant. It was an expensive lesson, so I’m sparing you the same headache.

 

[Rimmed]

Nothing teaches co-witness faster than realizing your first setup was basically decorative.

 

[Alan]

I bought a red dot and mounted it, only to realize my irons were useless behind it. I bought a riser then lower irons, then finally learned what absolute and lower-third co-witness actually meant. It was an expensive lesson, so I’m sparing you the same headache.

At least now your setup actually makes sense...

 

[Rimmed]

Figuring out the whole co-witness thing can really hit your wallet pretty quickly. I really wish someone had broken down the difference between absolute and lower third before I went and bought three separate sets of iron sights. Guess you just live and learn, right?