Does anyone have experiance with these barrels. I am interested in building a 204 upper for my AR
I have no personal experience, Sonny, but read their info and I like the pitch (Accuracy Systems, Inc.)
The 'other caliber' AR15's are a unique animal and not for everyone, but AS seems to have the experience and attitude to make it work.
Stainless barrels and precision shooting go together.
You may want to ask this question in the Precision Shooting Forum of this board, as there are plenty of knowledgeable folks over there.
Good luck and keep us posted