Well I have been sitting on this barrel for a few years and have come to the conclusion that I am not going to build the rifle. So here it is. It is a Advanced barrel systems (currently know as "proof research") carbon fiber wrapped barrel chambered in .223 for a Remington 700 action. These barrels sell on the website right now for $900. Trades that I am interested in...... Smith K22, Tactical style 300 win mag, maybe a tactical .308, .338 edge or lapua, or a Gen 4 Glock 23. Complete AR upper. Lets talk!