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Posted: 11/4/2005 1:11:37 PM EDT
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Recently I had a carbine rebuilt by an excellent local gunsmith. I swiitched from an A1 configuration which zeroed easily to a flattop where I had a problems zeroing, almost running out of upward turns on the front sight and had to crank the Eotech's elevation alot to get a zero. Components in my case are a Oly/SGW lower mounting a Bushmaster 16"patrolman's barrel (no marking on FSB), White oak armament flatop upper, BMAS flipup BUIS, and EoTech 552, I'm former Infantry, so i know what a sight picture should look like and the fact that both the BUIS and EoTech both shot high leads me to believe its a build issue. What issue would cause the weapon to shoot high? |
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if that number is accurate then your upper is the problem ar15.com/forums/topic.html?b=3&f=118&t=240120 the upper should be +/- 1.720" |
| I re-measured using the picture from your posted link as reference (again without calphers), and I got 1 and 11(1/2)/16th inches. If my math is right that translates to 1.71875 inches, which is slightly below the numbers posted on the link. I've replaced the front sight post with a taller (.40) post and if this don't work, I guess I'll have to try a elevation adjustable BUIS. I guess EoTech will work as adjusted. Thanks for the help, at least I now know the problem is not related to the build. Any other suggestions on correcting this issure would be appreciated. |
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