Let me start of by saying that I am new to rifles and especially new to the AR-15. I took my AR out today for the second time, and the picture posted below is the result. I am certain there are folks on this forum getting better results at 300+ yards. I am looking for advice on how to improve overall accuracy. All shooting was done at 50 yards (for now this is all I have access to). There was almost no wind and it was a sunny day. All shooting was done from a bench, seated, using iron sights. Ammo was 55 grain American Eagle. The rifle is a Stag Arms 2T, everything is stock. Specific Questions: 1. What kind of accuracy is this rifle capable of with irons and no upgrades. 2. As you can see in my second photo, I have the rear sight moved to the left. All my shots were hitting right initially. After I adjusted the rear sight to the left, my shots started to center. Is this the rifle or me? 3. The trigger on the Stag is pretty heavy. I have considered switching it out with something like a RRA 2 stage. Good idea or should I just stick with it and keep practicing?