I have a BCA complete upper in 223 Wylde. Problem is, I have yet to lay my hands on it and won't for another 56 days. I paid $189 shipped to Alaska, so I honestly don't expect 1/2" 3, 5, or 10 shot groups at 100 yards. From everything I have read, watched, etc. on them, some can get down to 1 1/4" 5 shot groups all the 8" plus at 100 yards. I will let you know what mine does when I finally get to take it the range.