the goal was to find a barrel with greater potential accuracy, if this could be done for less money then even better, I found a model1sales ershaw barrel with a the options of 5.56 chamber or 223 chamber and the 223 chamber supposedly gives greater accuracy but if the shaw barrels are that bad then a 20" WOA with 223wylde chamber or 20" rock river with 223wylde chamber look like the best choices
I have read that model1sales sells lower quality parts.