Guys I have a DSA carbine barrel this is the US made barrel, It has a set of DSA bipod cut handguards and a QD Fal bipod bipod. The barrel looks fine to me. It should be a good shooter It has a DSA muzzle break soldered on it. I will throw in a gas plug, regulator, piston and spring and a metric carrier with an inch pattern bolt. This will give you a complete front end minus the gas tube. I do not think I have any gas tubes laying around but if I do I will throw in it.
I am asking $300 for the whole thing shipped via priority mail with confirmation this will count for 2 US parts for your build. First I will take it can have it.
I did end up finding a gas tube by the way guys so this will be a complete front end.