Vortex Crossfire and Co-Witness

mrakimbo

mrakimbo

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I've got a Ruger AR15. I've got a Vortex Crossfire II 1-4x24. The Ruger has flip-up BUS.

Is there a huge difference between absolute and 1/3 co-witness? I get where the sights line up w/ the scope. 1/3 would raise the scope higher to get the sights into the lower-third of the scope. Is absolute generally comfortable? Am I delving into another gun debate like .45 vs 9mm and I should just abandon ship right away?

Basically all of my shooting experience is pistols. I have pretty minimal experience optics. I did my research and got recommendations for scopes (1-4x for 3 gun). But co-witness sort of escaped me until now.
 
You will not be able to use the irons through the scope. Cowitnessing is for red dots. My thoughts on cowitnessing through experience are absolute for folding BUIS (same cheek weld) and lower 1/3 for fixed BUIS. Because if you're looking through your rear aperture anyways then you've just spent hundreds of dollars on an illuminated front sight. Raising your head and sighting above the irons with the red dot actually gives the benefits of the red dot. However none of this applies with a scope. They all have slight magnification on their lowest setting so you'll have both focus and parralax issues making your front sight a blurry floating blob when viewed through the scope.
 
Makes sense. I'll probably just remove the BUIS entirely, save them for a 22LR upper or something. Thanks for the info.
 
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