I just purchased a new Bushmaster XM-15 A3 upper. I went to sight the rifle in and at 25 yard I had to move the rear peep sight almost all the way to the left to hit the center of the target, probably 12 to 14 clicks. I thought this was pretty crapy so I did some research on the net and discovered this is a common problem with Bushmaster Rifles. Any way I called Bushmaster and they are going to have me send the Rifle back (they are paying to ship it) and they will re-index the barrel and fix the problem. Just a post in case some one else has the same problem. I am new to the AR platform gun so I have plenty to learn. Sound right to everyone?