Hey cofi,

Not sure if you checked out MidwayUSA's website, but here are some 14.5" chrome lined barrels from Daniel Defense and most of them have a status of "Available". They also have a 1:7 twist.

http://www.midwayusa.com/browse/Brow...*&brandId=2684

That was just a quick glance at their AR-15 barrels and I'm not sure if you have a brand preference. Locally (if you live in the Denver area), if you haven't already, check 5280 Armory.

Good luck to you.