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9/19/2017 7:27:10 PM
Posted: 3/7/2006 1:40:40 PM EDT
I just got a RRA A2 Upper receiver, and when I tried to put the sights on 8/3 -2, it would only go down to 8/3 -1. Is it like this on all RRA A2 uppers?

I know an M16 goes to 8/3 -2...
Link Posted: 3/7/2006 1:49:49 PM EDT
That's something about how the sight was assembled. You can reset it. Read the instructions for setting your rifle's battle zero for what size allen wrench to use and how to reset the range barrel.
Link Posted: 3/7/2006 5:48:07 PM EDT
take a look at this link and see if it will be any help to you

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