I had a SOCOM when they first came out. The sights are the major issue for shooting with any precision past 100 yards. The fat front sight bascally covers, or exceeds a "people" target at 100 yards, and the rear sight has been drilled to a ghost ring. Nothing wrong with them if used as intended, but as the range increases, the challenge begins. I was told by Springfield you can replace them with the Scout/Bush model "standard" type sights if you want something a little easier for longer range shooting.
One thing to consider too with all of the different barrel lengths is the number of clicks each requires for the different ranges. For example, at 100 yards, my standard model zero was around 8-10 clicks, my Bush model was 14, and my SOCOM was 22.
I used both a Scout scope and Aimpoint on my SOCOM as well as the irons. My favorite was the Aimpoint, but the scope was OK too. Using ball ammo and the Aimpoint, the SOCOM shoots pretty much like my AKs at around a 100 yards, when shot the same way. The AK's are a lot easier handling wise though, especially when shot realistically.
At this point, I cant say for sure which shot which (hey, Im getting CRS
), but one was my SOCOM with its Aimpoint, the other one of my AK's with an Aimpoint on it as well(Im thinking the one on the left was te SOCOM). Doesnt really matter though, as they are basically the same.
If I were to buy another M1A, Id probably go with a standard rifle with an Ultimak/Aimpoint combo on it. The factory rail on mine was steel, got very hot, very quick, retained that heat a long time, and wasnt even mil spec, so none of my mil spec mounts would fit. The Ultimak is a class act, and works very well.