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1/22/2020 12:12:56 PM
Posted: 9/18/2009 7:00:39 PM EST
I have a RRA 20" A2 upper that I put on a DPMS lower and I went to sight in. The front sight is bottomed out in the base and it is still shooting about an 1.5" low at 25yds. I have to move the rear drum to 500 to get it level. The front base is stamped with an M and an F and the rear drum is the 800 meter. I have read that this is an incorrect combination. Is this right? Do I need to change the rear drum or just file the front sight.? thanks for any input.
Link Posted: 9/18/2009 7:19:57 PM EST
[Last Edit: 9/18/2009 7:20:18 PM EST by timb3]
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