Posted: 8/16/2016 5:43:33 PM EDT
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If I have a Glock with a front sight that is 0.160" wide, does that mean that it "covers" (or spans) 16 MOA? Talking approximately here; I know that the math would be more detailed.
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MOA is minute of angle and as such it's an angular measurement.
The good news it that the number of MOA that your front sight would cover would be constant regardless of range. Let's say for example your front sight is 24" in front of your eye. Using the 24" distance from eye to front sight as the adjacent side of the triangle and the 0.160" wide front sight sets the opposite side of the triangle and solve for the angle, You'll get .22.918 minutes or essentially 23 MOA. 1 MOA subtends 1.047 inches at 100 yards so a front sight that coverers 23 MOA at 100 yards would cover 24" (23 x 1.047 = 24.081) That's a It's a linear equation so at 50 yards it will cover 12" and at 25 yards it will cover 6" and at 12.5 yards it will cover 3" --- Now...the MOA the front sight subtends depends on the distance from the eye to front sight, so if you have a longer reach it will subtend slightly less and if you have shorter reach it will subtend a bit more. |