I recently got a Bushmaster in the classic A3 style, just like the AR15A2 but with a removable carry handle on top of a rail. It shoots about 4 inches right at 100 yards but in nice, tight groups. I'm not an expert with iron sights but I can shoot straight with my Garand and 1894. Have any of you had this problem, and how did you deal with it aside from shifting the rear sight 8 or so clicks left?
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