4.5/5, your best yet. I love the dissasembly and the magazine release catch, along with the features like a left-right charging handle, folding front grip, and the good looking ejection port. Does the port open when the handle is pulled back? Conversion to the USR is nice, and in this case I prefer it to your standard AUG. However, I am sorry to say that I really am not a fan of that method of making a magazine curve. The front grip could be slightly more contoured and the barrel might be better without the technic pieces with their little connector holes. I recall the trigger being bit larger and sticking out more from the grip, and the scope having tiny pistol sights on the top as a backup, but these all are very small negatives compared to your wonderful improvements, especially on the body. Great work, and looking forward to another MOC from you.