You build it out of a KAC rifle lol. Just kidding so I received my Super duty upper, on quality alone it looks exceptional, nice maching, 50 shades of tan of which doesnt bother me the lower is slightly darker meh who cares, So I kept hearing on the Super Duty thread KAC blah blah blah, I dont disagree I have couple KAC rifles so I decided to comvert my Mod 2 into a URGI clone already started at the butt end and got the optics and mount KAC taupe front sight, off goes the upper to adco next week to be cut to 14.5 pin and weld either a surefire 4 prong or DA 3 prong and install the mk16 handguard then I will have a pretty close URGI clone and no one can complain its not a KAC, on that note so far I have read positive things on the accuracy of the super duty, I wont jusge it untill i run atleast 1000 rounds and get a few groups out of her, but I love the look and feel of this thing so far, I did build it for speed with a SSP geissele trigger time will tell
