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Posted: 6/5/2009 4:51:52 PM EDT
| I have a bushmaster M-4 type carbine. I have installed an arms Inc #40 BUIS and an Eotech 552. I also have replaced the standard front post with one that is.40 higher then the stock sight. This was done per Bushmaster recomendation if using an ARMS inc sight. When I do my Initial Zero I should use the small apeture of the sight ? MY ploan is to Zero the gun using the 50 yard zero. |
| You'll be able to obtain more precise groups using the smaller aperture. My groups with the large aperture run approximately 144% larger than those with the small aperture. If you have a standard rear sight leaf, there will be an elevation offset in the points of impact between the large and small aperture. |
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