Stop in for a cup of coffee

Zman, can you talk to some of your SWAT buddies about leaving cover on front of red dot please? Looks like it is counter intuitive but leaving front covered when in transition low light to day light seems to speed target acquisition? Example, going from out doors breaching to indoors. I experimented this weekend with electrical tape over front of red dot and shot a precision target at high speed. Oddly enough I could see everything. It was like the tape was not there. Very odd.

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Been puzzling on this since you mentioned it. Seems to me the practice turns the red dot into an iron sight and is intended reduce "aiming". I shoot both eyes open in tactical/ instinctive fire anyhow and think this technique would make that more natural.

Thoughts?