DanielDefense middy barrels/uppers?
Are they out yet? Specs? Profile? Gas port size?
Are you offering these configured to taste yet?
Regarding the port, I have an Armalite, BCo & a custom Krieger middy. The Armalite was re-profiled to .620 full length, and so is lighter, & yet recoils the least/smoothest. I suspect a smaller gas port.