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For CMP National Match competitions with the AR15, which sight should I get? 1/2x1/2 moa or 1/4x1/4 moa clicks? If the timed courses of fire between different distance ranges have zero untimed down time between the courses of fire, then the 1/2x1/2 moa clicks would be better because you would save time since there's less clicks of adjustment between the different courses of fire. However, if they give you time to adjust your sights before each timed course of fire, then the 1/4 by 1/4 moa clicks would be better because you'd be able to make finer adjustments. Is this assessment accurate? Do they give you time to adjust your sights between courses of fire? Thanks.

All the good shooters use 1/4 x 1/4.

Mine are 1/2 (elevation) x 1/4 (windage) owing to changing out the peep and hood, but as long as you remember what you have, it is ok.

There is a three minute prep time before each of the four courses of fire (in addition to the time it takes to move from 200 to 300, and again to 600). You have time to adjust. After prep time, you get two sighters (in two minutes) before the first 10 shots of sitting rapid, and again before the first 10 shots of prone rapid. There is plenty of time to adjust your sights. You will not be adjusting during the rapid fire strings, and during slow-fire strings there is plenty of time to adjust.

Much more depends on the shooter than the hardware. I'm still loosing my beginner's flinch, years into shooting Highpower. But I see the real good shooters at each match, and as long as you have a decent rifle, relax about that and practice position and ball-and-dummy drills to perfect technique.

Short answer - get 1/4 x/ 1/4. And mark your no-wind zero with a thin brush and white paint, and count the clicks for one revolution of each wheel (and remember the numbers) so you can go directly to where you want to be.

Regards,
Andrew