Help with build- barrel, gas tube, etc

[Bonas]

Aero Precision 18". Supposedly Aero Precision makes all the parts for Daniel Defense. Can't go wrong with that

Aero does not make all of Daniel Defense's parts. I don't think they make any, in fact. Daniel Defense has their own cold hammer forge. They forge their own barrels. I have nothing against Aero. I have plenty of Aero upper receivers, in fact. However, Aero is a mid-range producer. Ballistic Advantage makes Aero's barrels. I've also got several BA barrels. They're also a mid-range product. Aero bought BA a few years back.