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Posted: 5/22/2004 9:16:36 PM EDT
| I've seen the arguements that the Aimpoint 4 M.O.A. dot is too big, covers too much of the target, and the one about the 1 M.O.A. dot of the EOTech is too small for some people to pick up on quickly. Without going through all that again, and just for comparison sake, what M.O.A. size is the standard front sight post? It does it's fair share of obscuring targets at a distance so I was just curious. |
OK, it was nagging at me so I broke out the calculator. Since I suck at math, corrections are welcome.  Some building blocks first - Sight Radius = A rifle 19.75" or carbine 14.75" Distance from shooter's eye to rear sight ~3" = B 21600 minutes in a complete circle Front post width A2 .070" or A1 .065" ----------------A2 post on a rifle--------------------------- 2 x radius(inches) x 3.1416 = circumference(inches) 2 x (A+B) x 3.1416 = circumference 2 x (19.75" + 3") x 3.1416 = 142.9428" 142.9428/21600 = (0.0066177") MOA value of an A2 front sight post on a rifle = .07" / .0066177 = 10.58 MOA (give or take a bit) ----------------A2 post on a carbine-------------------------- 2 x (14.75" + 3") x 3.1416 = 111.5268" 111.5268/21600 = (0.00516") MOA value of an A2 front sight post on a carbine = .070 / 0.00516 = 13.57 MOA (give or take a bit) edit: factory assembled Colt M4s use a narrower front sight post to maintain a rifle's sight picture - IIRC. ------------------------------------------- And since one full revolution of a front sight post is worth about 5 MOA on a rifle; double that distance in thread pitch should equal ~10MOA. Seems about right.  Jeez my head hurts. 
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Looks right. I used this website to do the calculations, and I got the same results: www.1728.com/angsize.htm Scott |
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