This video is a walkthrough of cowitnessing, what it is, and how to field zero optics with the least amount of rounds necessary.
In this example we use the back up irons on the X95 Tavor, however, any redundant sighting systems would apply - if you had a red dot plus laser, for example, you could do the same thing.
In fact, you can use a back laser system to quickly zero magnified optics and you could not do the same with a BUIS.
Everything is a compromise!
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