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AR15.COM
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6/6/2006 4:34:58 AM EDT
A friend of mine gave me his MT6601 upper so that I could thread his barrel.
why does it have a F FSB? wouldn't this cause some aiming problems?

6/6/2006 4:51:25 AM EDT
[#1]
http://www.ak47.net/forums/topic.html?b=3&f=12&t=276886
6/6/2006 4:56:51 AM EDT
[#2]
thank you!
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