Awesome. Thanks for the input. Looks like I'll be getting a mid length barrel. I kinda was leaning that way any how.I prefer to go with a longer gas system when available. mid for 14.5 -18, and rifle for 18+
223/556 has a very "peaky" pressure when fired. Basically, there is a shit ton of pressure at first, then falls off pretty quick. The longer gas systems help immensely at reducing bcg velocity, gas in your face, noise, etc.