Have factory Windham, and love it. Iron sights relatively accurate, but only shot out to 100 yds. Haven't attempted to do any real accuracy shooting with it... partially because my eye sight isn't as young as it used to be Scored a lower on a local forum group buy. Haven't figured out what I'm going to do, I'm thinking of doing an accurate longer range type of build, without going into crazy distances. Or should I just do a std build with a good scope and upgraded trigger... So many choices!