Originally Posted by
Doc Glockster
I think another consideration is to decide once and for all if you want to co-witness with iron sights and STICK TO IT.
Here's my reasoning:
I employee the Meprolight M21 as my CQB optic. The triangle reticle to me is optimum for both placing the "whole" reticle on close-up targets or using just the tip for objects further away.
When I employ the optic with no cowitness, the reticle actually sits slightly above the front sight post in the most comfortable position. When I use a co-witness, the reticle actually appears to be touching the front sight post when lined up perfectly. Common sense says that this is introducing some error into the target acquisition versus zero (albeit maybe a small one).
I've never compared the difference in POA vs. POI when using the Meprolight with or without irons co-witness, but I'm guessing there must be some. There would almost have to be.
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