Doesn't the KAC 600m or their 300m BUIS allow the ACOG to be mounted at least one notch more to the rear than, say, a Matech? I want a BUIS on all my long guns and yet have to work with the ACOG's stingy eye relief. Asking before I spend the $$$ on a KAC rear BUIS assuming it's better than the Matech for my question. Going to be on an A4 clone.
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